The type of reaction illustrated is called ...? [ab-2]
decomposition
neutralisation
displacement
oxidation
To produce sodium
sulfate by the reaction illustrated you need ...? [ab-3]
potassium
sulfate + sodium hydroxide
sodium chloride +
sulfuric acid
sodium hydroxide +
sulfuric acid
sodium hydroxide + hydrochloric acid
In the reaction illustrated, in order to add the correct amount of acid you would add a few drops of Universal Indicator and add acid until the indicator in the conical flask was ...? [ab-4]
blue
orange
yellow
green
In the reaction illustrated, in order to add the correct amount of acid you would add a few drops of Universal Indicator to the conical flask. If too little acid was added the indicator colour could be? [ab-5]
blue
orange
yellow
green
In the reaction illustrated, in order to add the correct amount of acid you would add a few drops of Universal Indicator to the conical flask. If too much acid was added the indicator colour could be? [ab-6]
blue
orange
purple
green
To produce potassium chloride by the reaction illustrated you need ...? [ab-7]
potassium
sulfate + hydrochloric acid
sodium chloride + potassium hydroxide
potassium hydroxide + hydrochloric acid
sodium hydroxide + hydrochloric acid
To produce lithium nitrate by the reaction illustrated you need ...? [ab-8]
lithium
sulfate + nitric acid
sodium nitrate + lithium hydroxide
potassium nitrate + lithium hydroxide
lithium hydroxide + nitric acid
The diagram shows a method of preparing salts. Which of the following will forms when a transition metal oxide reacts with hydrochloric acid? [ab-9]
transition metal chloride + water
transition metal chloride + hydrogen
transition metal chloride only
water only
The diagram shows a method of preparing salts from reacting an insoluble metal oxide and an acid. This type of reaction is called? [ab-10]
electrolysis
neutralisation
reduction
displacement
The diagram shows a method of preparing salts by reacting an insoluble metal oxide with an acid. How can you tell when all the acid has been used up before filtering the mixture? [ab-11]
universal indicator will give a yellow colour in the acid
universal indicator will give a pale blue colour in the acid
no more of the metal oxide will dissolve in the acid
the solution will go clear
The diagram shows a method of preparing salts. Which of the following will form a transition metal
sulfate and hydrogen? [ab-12]
transition metal oxide +
sulfuric acid
transition metal + sodium
sulfate
transition metal hydroxide + potassium
sulfate
transition metal +
sulfuric acid
Which is the strongest base or alkali? [ab-13]
limewater
baking soda
vinegar
wine
Which is the weakest base or alkali? [ab-14]
limewater
baking soda
vinegar
wine
Which is the strongest acid? [ab-15]
limewater
baking soda
vinegar
wine
Which is the weakest acid? [ab-16]
limewater
baking soda
vinegar
wine
Which of the following can be mixed to form a neutral solution? [ab-17]
limewater and fizzy drink
baking soda and toothpaste
vinegar and wine
calomine lotion and common salt
Which of the following can be mixed to form a neutral solution? [ab-18]
limewater and washing soda
baking soda and wine
vinegar and common salt
ammonia and limewater
Which of the following can be safely used to treat an acid bee sting? [ab-19]
limewater
wine
calomine lotion
common salt
Which of the following can be safely used to treat an alkaline wasp sting? [ab-20]
calomine lotion
vinegar
washing soda
common salt
Which of the following is most likely to be part of an ant-acid indigestion medicine? [ab-21]
sodium hydrogencarbonate
ammonia
washing soda
limewater
Which of the following is the safest to use to treat an acid nettle sting? [ab-22]
wine
sodium hydrogencarbonate
washing soda
limewater
A small amount of a dense white powder was mixed with water in a test tube. Non of the white powder sank to the bottom of the test tube. A few drops of universal indicator were added and the solution turned blue. This meant the white powder was ...? [ab-23]
a soluble neutral substance
a slightly soluble acid
a very soluble alkali
a slightly soluble alkali
A small amount of a dense white powder was mixed with water in a test tube. Some of the white powder sank to the bottom of the test tube. A few drops of universal indicator were added and the solution turned blue. This meant the white powder was ...? [ab-24]
a soluble neutral substance
a slightly soluble acid
a very soluble alkali
a slightly soluble alkali
A small amount of a dense white powder was mixed with water in a test tube. Non of the white powder sank to the bottom of the test tube. A few drops of universal indicator were added and the solution turned green. This meant the white powder was ...? [ab-25]
a soluble neutral substance
a slightly soluble acid
a slightly soluble neutral substance
a slightly soluble alkali
A small amount of a dense white powder was mixed with water in a test tube. Some of the white powder sank to the bottom of the test tube. A few drops of universal indicator were added and the solution turned green. This meant the white powder was ...? [ab-26]
a soluble acidic substance
a slightly soluble neutral substance
a soluble
acidic substance
a slightly soluble alkali
A small amount of a dense white powder was mixed with water in a test tube. Non of the white powder sank to the bottom of the test tube. A few drops of universal indicator were added and the solution turned orange. This meant the white powder was ...? [ab-26]
a soluble weak alkali
a very soluble neutral substance
a soluble weak acid
a slightly soluble strong acid
A small amount of a dense white powder was mixed with water in a test tube. Some of the white powder sank to the bottom of the test tube. A few drops of universal indicator were added and the solution turned red. This meant the white powder was ...? [ab-26]
a soluble weak alkali
a slightly soluble neutral substance
a soluble weak acid
a slightly soluble strong acid
Which of the following is the pH of a strong acid? [ab-49]
pH 1
pH 14
pH 5
pH 9
Which of the following is the pH of a strong alkali? [ab-50]
pH 1
pH 14
pH 5
pH 9
Which of the following is the pH of a weak acid? [ab-51]
pH 1
pH 14
pH 5
pH 9
Which of the following is the pH of a weak alkali? [ab-52]
pH 1
pH 14
pH 5
pH 9
When dilute nitric acid reacts with sodium hydroxide the products are? [ab-53]
sodium nitrate + water
sodium nitrate + hydrogen
sodium hydride + hydrogen nitrate
sodium nitrite + oxygen
dilute acid X + copper(II) carbonate ==> copper(II)
sulfate + water + carbon dioxide. Acid X is? [ab-54]
nitric acid
sulfuric acid
sulfurous acid
hydrochloric acid
dilute acid X + magnesium hydroxide ==> magnesium chloride + water. Acid X is? [ab-55]
ammonium chlorate
sulfuric acid
hydrochloric acid
chloric acid
magnesium + dilute acid X ==> magnesium nitrate + hydrogen. Acid X is? [ab-56]
ammonium nitrate
nitrogen dioxide
nitrous acid
nitric acid
When hydrochloric acid is added to copper carbonate, the gas bubbles formed can be identified by? [ab-57]
burning with a squeaky pop
turning limewater cloudy
relighting a glowing splint
turning blue litmus red and then bleaching it
When
sulfuric acid is added to zinc, the gas bubbles formed can be identified by? [ab-58]
burning with a squeaky pop
turning limewater cloudy
relighting a glowing splint
turning blue litmus red and then bleaching it
An iron tray was cleaned with dilute hydrochloric acid and bubbles formed. The gas formed was? [ab-59]
oxygen
chlorine
hydrogen
carbon dioxide
A carbonate mineral rock was tested with dilute
sulfuric acid and bubbles formed. The gas formed was? [ab-60]
carbon monoxide
sulfur dioxide
hydrogen
carbon dioxide
Dilute
sulfuric acid will only form one product when reacted with? [ab-61]
ammonia
copper
magnesium oxide
zinc carbonate
Dilute
sulfuric acid will not readily react with? [ab-62]
ammonia
copper
magnesium oxide
zinc carbonate
Which will form a salt and water when reacted with dilute hydrochloric acid? [ab-63]
ammonia
copper
magnesium oxide
zinc carbonate
Which will form a salt, water and carbon dioxide when reacted with dilute hydrochloric acid? [ab-64]
ammonia
copper
magnesium oxide
zinc carbonate
Which of these reactants is the best combination to use to make magnesium
sulfate? [ab-65]
magnesium oxide +
sulfuric acid
magnesium chloride + sodium
sulfate
sulfuric acid + magnesium chloride
magnesium nitrate +
sulfuric acid
Which of these reactants is the best combination to use to make zinc nitrate? [ab-66]
zinc chloride + nitric acid
nitric acid + zinc hydroxide
nitric acid + zinc
sulfate
zinc oxide + nitrous acid
Which of these reactants is the best combination to use to make copper(II)
sulfate? [ab-67]
copper +
sulfuric acid
copper(II) chloride + sodium
sulfate
copper(II) oxide +
sulfuric acid
copper(II) nitrate + sodium chloride
Which of these reactants is the best combination to use to make zinc chloride? [ab-68]
calcium chloride + zinc carbonate
zinc nitrate + hydrochloric acid
sodium chloride + zinc oxide
zinc carbonate + hydrochloric acid
The diagram shows the preparation of a salt. Which word applies to stages 1-2? [ab-69]
neutralisation
filtration
evaporation
condensation
The diagram shows the preparation of a salt. Which word applies to stage 3? [ab-70]
neutralisation
filtration
evaporation
condensation
The diagram shows the preparation of a salt. Which word describes the change from 3 to 4? [ab-71]
neutralisation
filtration
evaporation
condensation
The diagram shows the preparation of a salt. Which word describes stage 4? [ab-72]
neutralisation
filtration
evaporation
crystallisation
The diagram shows the preparation of a salt using a solid and an acid. Which is true concerning this method? [ab-73]
the solid can be an insoluble base
it is not a neutralisation reaction
you cannot use an insoluble carbonate
the solid must be an alkali
The diagram shows the preparation of a salt. Which word means a 'soluble base'? [ab-74]
oxide
alkali
hydroxide
indicator
The diagram shows a method of salt preparation. Which statement is true about the method? [ab-75]
the method uses an insoluble base
the acid must be in the burette and the alkali in the flask
the neutralisation point is detected with an indicator
the salt will precipitate at the neutralisation point
The diagram shows one method of salt preparation. Which statement is true about the method illustrated? [ab-76]
the salt will precipitate at the neutralisation point
an alkali is used
the neutralisation point is detected with an indicator
the method uses an insoluble base
Complete the word equation: zinc oxide + hydrochloric acid ==> ..???.. [ab-77]
zinc chloride + hydrogen
zinc hydrochloride + water
zinc chloride + water
zinc hydrochloride chloride + water + carbon dioxide
Complete the word equation: zinc hydroxide + hydrochloric acid ==> ..???.. [ab-78]
zinc hydrochloride + water
zinc chloride + water + carbon dioxide
zinc hydrochloride + hydrogen
zinc chloride + water
Complete the word equation: zinc + hydrochloric acid ==> ..???.. [ab-79]
zinc chloride + hydrogen
zinc chloride + water
zinc hydrochloride + hydrogen
zinc hydrochloride + water
Complete the word equation: zinc carbonate + hydrochloric acid ==> ..???.. [ab-80]
zinc hydrochloride + water
zinc chloride + water + carbon dioxide
zinc hydrochloride + hydrogen
zinc chloride + carbon dioxide
Complete the word equation: nickel +
sulfuric acid ==> ..???.. [ab-81]
nickel
sulfate + hydrogen
nickel
sulfate + water
nickel
sulfite + water
nickel
sulfite + hydrogen
Complete the word equation: nickel oxide +
sulfuric acid ==> ..???.. [ab-82]
nickel
sulfate + hydrogen
nickel
sulfate + water
nickel
sulfite + water
nickel
sulfite + hydrogen
Complete the word equation: nickel hydroxide +
sulfuric acid ==> ..???.. [ab-83]
nickel
sulfate + hydrogen
nickel
sulfite + water
nickel
sulfate + water
nickel
sulfite + hydrogen
Complete the word equation: nickel carbonate +
sulfuric acid ==> ..???.. [ab-84]
nickel
sulfate + carbon dioxide
nickel
sulfite + water
nickel
sulfate + water
nickel
sulfate + water + carbon dioxide
Complete the word equation: ammonia +
sulfuric acid ==> ..???.. [ab-85]
ammonium
sulfate
ammonia
sulfate
ammonium hydrogensulfate
ammonia
sulfite
Complete the word equation: ammonia + hydrochloric acid ==> ..???.. [ab-86]
ammonia chloride
ammonium chloride
ammonium hydrochloride
ammonia hydrochloride
Complete the word equation: ammonia + nitric acid ==> ..???.. [ab-87]
ammonia nitrite
ammonium nitrite
ammonium nitrate
ammonia hydrogennitrate
Complete the word equation: sodium hydroxide +
sulfuric acid ===> ..???.. [ab-88]
sodium
sulfate
sodium
sulfate + hydrogen
sodium hydrogensulfite + water
sodium
sulfate + water
Given the following neutralisation equation: NaOH(aq) + HCl(aq) ==> NaCl(aq) + H2O(l) Which is the alkali? [ab-89]
NaOH
HCl
NaCl
H2O
Given the following neutralisation equation: NaOH(aq) + HCl(aq) ==> NaCl(aq) + H2O(l) Which is the acid? [ab-90]
NaOH
HCl
NaCl
H2O
Given the following neutralisation equation: NaOH(aq) + HCl(aq) ==> NaCl(aq) + H2O(l) Which is the salt? [ab-91]
NaOH
HCl
NaCl
H2O
Given the following neutralisation equation: NaOH(aq) + HCl(aq) ==> NaCl(aq) + H2O(l) Which is the base? [ab-92]
H2O
HCl
NaCl
NaOH
Which two reactants would you use to make potassium nitrate? [ab-101]
nitric acid and potassium hydroxide
sodium
nitrate and potassium chloride
sulfuric acid and sodium nitrate
nitric acid and sodium hydroxide
Insoluble metal oxides and metal hydroxides (bases) will not dissolve to form an alkaline solution. But they will dissolve in acids to give the same reaction as with alkalis. This method is particularly handy for making transition metal salts. Which reaction will produce a transition metal chloride and hydrogen? [ab-102]
transition metal oxide + sodium chloride
transition metal + hydrochloric acid
transition metal hydroxide + hydrochloric acid
transition metal +
sulfuric acid
Insoluble metal oxides and metal hydroxides (bases) will not dissolve to form an alkaline solution. But they will dissolve in acids to give the same reaction as with alkalis. This method is particularly handy for making transition metal salts. When sufficient base has been added so that no more dissolves, how is the excess base removed? [ab-103]
boiling
distillation
filtration
crystallisation
Insoluble metal oxides and metal hydroxides (bases) will not dissolve to form an alkaline solution. But they will dissolve in acids to give the same reaction as with alkalis. This method is particularly handy for making transition metal salts. When sufficient base has been added so that no more dissolves. How could you test that all the acid was neutralised? [ab-104]
see if crystals form on evaporating the solution
see if the solution is clear
measure the boiling point of the solution
use indicator paper
Insoluble bases and metals will not dissolve to form an alkaline solution, but they will dissolve in acids to form salts. This method is particularly handy for making transition metal salts. What pair of chemicals will make cobalt
sulfate and water? [ab-105]
cobalt oxide +
sulfuric acid
cobalt + hydrochloric acid
cobalt + nitric acid
cobalt hydroxide + nitric acid
Insoluble bases and metals will not dissolve to form an alkaline solution, but they will dissolve in acids to form salts. This method is particularly handy for making transition metal salts. What pair of chemicals will make cobalt chloride and hydrogen? [ab-106]
cobalt oxide +
sulfuric acid
cobalt + hydrochloric acid
cobalt hydroxide + sodium chloride
cobalt hydroxide + nitric acid
Which two reactants make ammonium chloride and water? [ab-107]
ammonium
sulfate and hydrochloric acid
ammonium hydroxide and sodium chloride
ammonium hydroxide and hydrochloric acid
ammonia and potassium chloride
Which of these gives an alkaline solution when dissolved in water? [ab-108]
aluminium hydroxide
copper hydroxide
iron hydroxide
ammonia (ammonium hydroxide)
Which of these gives an alkaline solution when dissolved in water? [ab-109]
sodium hydroxide
copper hydroxide
iron hydroxide
aluminium hydroxide
Which of these gives an alkaline solution when dissolved in water? [ab-109]
nickel hydroxide
potassium hydroxide
iron hydroxide
magnesium hydroxide
Which of A to D completes the equation ..?.. [ab-111] ..?.. + potassium hydroxide ==> potassium
sulfate + water
potassium nitrate
calcium hydroxide
sulfuric acid
sodium chloride
Which of A to D completes the equation ..?.. [ab-112] hydrochloric acid + sodium hydroxide ==> ..?.. + water
sodium
sulfate
potassium chloride
calcium chloride
sodium chloride
Which of A to D completes the equation ..?.. [ab-113] ..?.. + nitric acid ==> ammonium nitrate
ammonia (ammonium hydroxide)
calcium hydroxide
ammonium
sulfate
sodium nitrate
Which of A to D completes the equation ..?.. [ab-114]
sulfuric acid + ..?.. ==> calcium sulfate + water
ammonia
sulfate
calcium hydroxide
calcium chloride
sodium
sulfate
Which quantities a, b, c and d are required to balance the equation ... (note that '1's would not be shown in the equation) a Zn(s) + b HCl(aq) ==> c ZnCl2(aq) + d H2(g) ? [ab-29]
1 2 1 1
2 2 2 1
2 1 1 2
1 1 2 2
Which quantities a, b, c and d are required to balance the equation ... (note that '1's would not be shown in the equation) a Fe(s) + b H2SO4(aq) ==> c FeSO4(aq) + d H2(g) ? [ab-30]
1 1 1 2
1 1 1 1
2 2 2 1
2 1 2 2
Which quantities a, b, c and d are required to balance the equation ... (note that '1's would not be shown in the equation) a Al(s) + b HCl(aq) ==> c AlCl3(aq) + d H2(g) ? [ab-31]
1 6 3 2
2 3 2 3
2 6 2 3
1 3 3 2
Which quantities a, b, c and d are required to balance the equation ... (note that '1's would not be shown in the equation) a Al(s) + b H2SO4(aq) ==> c Al2(SO4)3(aq) + d H2(g) ? [ab-32]
1 3 1 3
2 3 2 3
1 2 2 2
2 3 1 3
Which quantities a, b, c, d and e are required to balance the equation ... (note that '1's would not be shown in the equation) a CaCO3(s) + b HCl(aq) ==> c CaCl2(aq) + d H2O(l) + e CO2(g) ? [ab-33]
1 2 1 1 1
2 2 1 2 1
1 1 1 1 1
2 1 2 2 2
Which quantities a, b, c, d and e are required to balance the equation ... (note that '1's would not be shown in the equation) a Na2CO3(s) + b HCl(aq) ==> c NaCl(aq) + d H2O(l) + e CO2(g) ? [ab-34]
1 4 4 2 2
1 2 2 1 1
2 2 4 2 2
2 2 2 1 1
Which quantities a, b, c, d and e are required to balance the equation ... (note that '1's would not be shown in the equation) a Tl2(CO3)3(s) + b HCl(aq) ==> c TlCl3(aq) + d H2O(l) + e CO2(g) ? [ab-35]
2 6 4 3 6
1 3 2 6 2
1 6 2 3 3
2 3 4 3 6
Which quantities a, b, c, d and e are required to balance the equation ... (note that '1's would not be shown in the equation) a Tl2(CO3)3(s) + b H2SO4(aq) ==> c Tl2(SO4)3(aq) + d H2O(l) + e CO2(g) ? [ab-36]
2 6 4 3 6
1 3 2 6 6
1 6 2 6 3
1 3 1 3 3
Which quantities a, b, c and d are required to balance the equation ... (note that '1's would not be shown in the equation) a NaOH(aq) + b HCl(aq) ==> c NaCl(aq) + d H2O(l) ? [ab-37]
1 1 1 1
1 2 2 1
2 1 1 2
1 2 1 1
Which quantities a, b, c and d are required to balance the equation ... (note that '1's would not be shown in the equation) a Ca(OH)2(aq) + b HCl(aq) ==> c CaCl2(aq) + d H2O(l) ? [ab-38]
1 2 1 1
1 2 1 2
2 1 1 2
2 2 2 1
Which quantities a, b, c and d are required to balance the equation ... (note that '1's would not be shown in the equation) a Al(OH)3(s) + b HCl(aq) ==> c AlCl3(aq) + d H2O(l) ? [ab-39]
2 6 2 3
1 6 2 6
1 3 1 3
2 3 2 3
Which quantities a, b, c and d are required to balance the equation ... (note that '1's would not be shown in the equation) a Fe2O3(s) + b HCl(aq) ==> c FeCl3(aq) + d H2O(l) ? [ab-40]
2 6 2 3
1 6 2 6
1 3 1 3
1 6 2 3
Which quantities a, b, c and d are required to balance the equation ... (note that '1's would not be shown in the equation) a MgO(s) + b HCl(aq) ==> c MgCl2(aq) + d H2O(l) ? [ab-41]
1 2 1 1
1 1 1 1
2 2 1 2
1 4 1 2
Which quantities a, b, c and d are required to balance the equation ... (note that '1's would not be shown in the equation) a Mg(OH)2(s) + b H2SO4(aq) ==> c MgSO4(aq) + d H2O(l) ? [ab-42]
1 2 1 1
1 1 1 2
2 2 1 2
1 4 1 2
Which quantities a, b, c and d are required to balance the equation ... (note that '1's would not be shown in the equation) a Li2O(s) + b HCl(aq) ==> c LiCl(aq) + d H2O(l) ? [ab-43]
1 2 1 1
1 1 1 1
1 2 2 1
1 2 1 2
Which quantities a, b, c and d are required to balance the equation ... (note that '1's would not be shown in the equation) a KOH(aq) + b H2SO4(aq) ==> c K2SO4(aq) + d H2O(l) ? [ab-44]
1 2 1 1
1 1 1 1
2 2 1 2
2 1 1 2
Which ions do acids always produce in water? [ab-45]
H+
OH-
H2+
O2-
Which ions do alkalis always produce in water? [ab-46]
H+
OH-
H2+
O2-
Which is the correct ionic equation for the neutralisation of an acid and an alkali? [ab-47]
2H+(aq) + O2-(aq) ==> 2H2O(l)
H-(aq) + OH+(aq) ==> H2O(l)
H+(aq) + OH-(aq) ==> H2O(l)
4H+(aq) + O2-(aq) ==> 2H2O(l)
When hydrochloric acid is neutralised with sodium hydroxide, which two ions have the highest concentrations in the resulting mixture? [ab-48]
H+ and OH-
Na+ and OH-
H+ and Cl-
Na+ and Cl-
Complete the symbol equation: NH3 + HCl ==> ...???... [ab-93]
NH4Cl
NH3HCl
NH3Cl
NH3
Complete the symbol equation: NH3 + HNO3 ==> ...???... [ab-94]
NH3HNO3
NH4NO3
NH3NO3
NH4HNO3
Complete the symbol equation: 2NH3 + H2SO4 ==> ...???... [ab-95]
(NH3)2HSO4
NH42SO4
(NH4)2SO4
NH4HSO4
Given the symbol equation: MgO + 2HCl ==> ???? + H2O What is the missing ???? [ab-96]
MgCl
Mg2Cl
2MgCl
MgCl2
Given the symbol equation: Ca(OH)2 + H2SO4 ==> CaSO4 + ???? What is the missing ???? [ab-97]
2H2O
H2O
2H2
H2O2
Given the symbol equation: ???? + 2HNO3 ==> Zn(NO3)2 + H2O + CO2 What is the missing ???? [ab-98]
Zn(OH)2
ZnCO3
ZnHCO3
ZnCO2
Given the symbol equation: Fe + H2SO4 ==> FeSO4 + ???? What is the missing ???? [ab-99]
H2O
HO2
H2
2H2
Given the symbol equation: Na2CO3 + 2HCl ==> ???? + H2O + CO2 What is the missing ???? [ab-100]
NaCl
Na2Cl2
NaCl
2NaCl
The equation shows the formation of sodium
sulfate when sodium hydroxide neutralises sulfuric acid .... H2SO4 + 2NaOH ==> Na2SO4 + 2H2O An acid salt called sodium hydrogensulfate can also be made ... H2SO4 + NaOH ==> NaHSO4 + H2O 50 cm3 of a
sulfuric acid solution was neutralised by 20 cm3 of a sodium hydroxide solution to make sodium
sulfate. What volume of sodium hydroxide solution is needed to form sodium hydrogensulfate from the 50cm3 of
sulfuric acid? [ab-115]
10 cm3
15 cm3
20 cm3
25 cm3
The equation shows the formation of sodium
sulfate when sodium hydroxide neutralises sulfuric acid .... H2SO4 + 2NaOH ==> Na2SO4 + 2H2O An acid salt called sodium hydrogensulfate can also be made ... H2SO4 + NaOH ==> NaHSO4 + H2O 100 cm3 of a
sulfuric acid solution was neutralised by 40 cm3 of a sodium hydroxide solution to make sodium
sulfate. What volume of sodium hydroxide solution is needed to form sodium hydrogensulfate from the 100cm3 of
sulfuric acid? [ab-116]
10 cm3
20 cm3
50 cm3
200 cm3
The equation shows the formation of sodium
sulfate when sodium hydroxide neutralises sulfuric acid .... H2SO4 + 2NaOH ==> Na2SO4 + 2H2O An acid salt called sodium hydrogensulfate can also be made ... H2SO4 + NaOH ==> NaHSO4 + H2O 70 cm3 of a
sulfuric acid solution was neutralised by 15 cm3 of a sodium hydroxide solution to make sodium hydrogensulfate. What volume of sodium hydroxide solution is needed to form sodium
sulfate from the 70cm3 of
sulfuric acid? [ab-117]
35 cm3
20 cm3
30 cm3
40 cm3
The equation shows the formation of sodium
sulfate when sodium hydroxide neutralises sulfuric acid .... H2SO4 + 2NaOH ==> Na2SO4 + 2H2O An acid salt called sodium hydrogensulfate can also be made ... H2SO4 + NaOH ==> NaHSO4 + H2O 80 cm3 of a
sulfuric acid solution was neutralised by 25 cm3 of a sodium hydroxide solution to make sodium hydrogensulfate. What volume of sodium hydroxide solution is needed to form sodium
sulfate from the 80cm3 of
sulfuric acid? [ab-118]
40 cm3
20 cm3
25 cm3
50 cm3
Method 1 (left) Method 2 (above) The diagrams show two ways of making a salt. Method 1 cannot be used for making transition metal salts because transition metal oxides or hydroxides are ..?.. [ab-119]
insoluble in water
too coloured to follow the reaction
unreactive with acids
not bases
Which of the following statements about acids and alkalis is TRUE? [ab-120]
hydrogen ions make sodium hydroxide solution alkaline
ammonium hydroxide is alkaline due to the presence of OH- ions
sulfuric acid is acid because it contains H- ions
hydrochloric acid solution is acidic because it contains hydroxide ions
Which of the following statements about acids and alkalis is TRUE? [ab-121]
hydrogen ions make sodium hydroxide solution alkaline
ammonium hydroxide is alkaline due to the presence of OH+ ions
sulfuric acid is acid because it contains H+ ions
hydrochloric acid solution is acidic because it contains hydroxide ions
Which of the following statements about acids and alkalis is TRUE? [ab-122]
the presence of oxide ions make sodium hydroxide solution alkaline
ammonium hydroxide is alkaline due to the presence of OH+ ions
sulfuric acid is acid because it contains H- ions
hydrochloric acid solution is acidic because it contains hydrogen ions
Which of the following statements about acids and alkalis is TRUE? [ab-123]
hydroxide ions make sodium hydroxide solution alkaline
ammonium hydroxide is alkaline due to the presence of OH+ ions
sulfuric acid is acid because it contains H- ions
hydrochloric acid solution is acidic because it contains hydride ions
What word specifically means 'a soluble base'? [ab-124]
acid
alkali
salt
dissolves
A molecule of hydrobromic acid (HBr) has one hydrogen that can be replaced by a metal to form a salt. Some acids have two hydrogens that can be replaced. If both hydrogens are replaced the 'normal' salt is formed. If one hydrogen only is replaced, an 'acid' salt is formed. Which of the following can form an acid salt? [ab-125]
nitric acid, HNO3
hydrochloric acid, HCl
carbonic acid, H2CO3
hydroiodic acid, HI
A molecule of hydrobromic acid (HBr) has one hydrogen that can be replaced by a metal to form a salt. Some acids have two hydrogens that can be replaced. If both hydrogens are replaced the 'normal' salt is formed. If one hydrogen only is replaced, an 'acid' salt is formed. Which of the following can form an acid salt? [ab-126]
nitric acid, HNO3
hydrochloric acid, HCl
hydriodic acid, HI
sulfuric acid, H2SO4
When hydrochloric acid is neutralised with sodium hydroxide, which two ions have the lowest concentrations in the resulting mixture? [ab-127]
H+ and OH-
Na+ and OH-
H+ and Cl-
Na+ and Cl-
For reactions to occur, the particles of the reactants must collide. The fewer the collisions that take place, the slower the rate of a reaction. Which DECREASES the frequency of collision between reactant particles? [rr-1]
For reactions involving gaseous reactants, decrease the pressure of the gases
For reactions involving solutions, raise the concentration of the solution
If a solid is reacting with a liquid, break the solid into smaller pieces
Raise the temperature of the reaction mixture
For reactions to occur, the particles of the reactants must collide. The fewer the collisions that take place, the slower the rate of reaction. Which DECREASES the frequency of collision between reactant particles? [rr-2]
For reactions involving gaseous reactants, increase the pressure of the gases
For reactions involving solutions, decrease the concentration of the solution
If a solid is reacting with a liquid, break the solid into smaller pieces
Raise the temperature of the reaction mixture
For reactions to occur, the particles of the reactants must collide. The fewer the collisions that take place, the slower the rate of reaction. Which INCREASES the frequency of collision between reactant particles? [rr-3]
For reactions involving gaseous reactants, decrease the pressure of the gases
For reactions involving solutions, decrease the concentration of the solution
If a solid is reacting with a liquid, break the solid into smaller pieces
Lower the temperature of the reaction mixture
For reactions to occur, the particles of the reactants must collide. The fewer the collisions that take place, the slower the rate of reaction. Which INCREASES the frequency of collision between reactant particles? [rr-4]
For reactions involving gaseous reactants, decrease the pressure of the gases
For reactions involving solutions, decrease the concentration of the solution
If a solid is reacting with a liquid, use large pieces of the solid
Increase the temperature of the reaction mixture
Calcium carbonate in the form of limestone dissolves in hydrochloric acid and giving off carbon dioxide gas. Which conditions would produce the fastest reaction? [rr-5]
temperature of 40°C and 10cm3 of dilute acid
temperature of 20°C and 10cm3 of dilute acid
temperature of 40°C and 5cm3 of dilute acid and 5cm3 of water
temperature of 20°C and 5cm3 of dilute acid and 5cm3 of water
Calcium carbonate in the form of limestone dissolves in hydrochloric acid and giving off carbon dioxide gas. Which conditions would produce the slowest reaction? [rr-6]
temperature of 40°C and 10cm3 of dilute acid
temperature of 20°C and 10cm3 of dilute acid
temperature of 40°C and 5cm3 of dilute acid and 5cm3 of water
temperature of 20°C and 5cm3 of dilute acid and 5cm3 of water
Iron reacts with hydrochloric acid to form iron(II) chloride and hydrogen gas. 2g of iron is added to 100cm3 of dilute hydrochloric acid. Which conditions produces the fastest reaction? [rr-7]
iron pieces at 25°C
iron pieces at 50°C
iron powder at 25°C
iron powder at 50°C
Iron reacts with hydrochloric acid to form iron(II) chloride and hydrogen gas. 2g of iron is added to 100cm3 of dilute hydrochloric acid. Which conditions produces the slowest reaction? [rr-8]
iron pieces at 25°C
iron pieces at 50°C
iron powder at 25°C
iron powder at 50°C
A group of students carried out an experiment in which they added manganese dioxide to rapidly decompose a solution of hydrogen peroxide. To show that the manganese dioxide was acting as a catalyst, what must they do before and after the experiment? [rr-9]
BEFORE: weigh the hydrogen peroxide solution and manganese dioxide in separate containers before mixing AFTER: weigh both of the containers again
BEFORE: weigh the hydrogen peroxide solution in a beaker and then add the manganese dioxide to the beaker AFTER: weigh the beaker and its contents
BEFORE: weigh the manganese dioxide and then add the hydrogen peroxide solution to the beaker AFTER: weigh the beaker and its contents
BEFORE: weigh the manganese dioxide and a dry filter paper AFTER: filter the solution, dry the filter paper and the solid residue, weigh the filter paper
When marble chips dissolve in acid, the reaction can be speeded up by? [rr-10]
grinding the marble chips
lowering the temperature
using a larger flask
using more dilute acid
When marble chips dissolve in acid, the reaction can be slowed down by? [rr-11]
grinding the marble chips
lowering the temperature
using a larger flask
using more dilute acid
Copper(II) oxide catalyses the decomposition of hydrogen peroxide to form oxygen. In acting as a catalyst the copper(II) oxide? [rr-12]
causes the decomposition to begin
increases the total amount of oxygen formed
increases the rate at which oxygen is formed
prevents the decomposition of the oxygen formed
Which mixture will enable the fastest reaction to take place between solid calcium carbonate (marble chips) and dilute hydrochloric acid? [rr-13]
large chips, concentrated acid, low temperature
low temperature, small chips, dilute acid
concentrated acid, high temperature, small chips
high temperature, small chips, dilute acid
Which mixture will produce the slowest reaction to take place between solid calcium carbonate (marble chips) and dilute hydrochloric acid? [rr-14]
large chips, concentrated acid, low temperature
low temperature,
large chips, dilute acid
concentrated acid, high temperature, small chips
high temperature, small chips, dilute acid
Platinum catalyses the reaction between
sulfur dioxide SO2 and oxygen O2 to form sulfur trioxide SO3. Which of the statements 1, 2 or 3 is/are correct? [rr-15] 1. more
sulfur trioxide is formed when more catalyst is used 2. the catalyst increases the rate of reaction between
sulfur dioxide and oxygen 3. when the reaction is complete the platinum catalyst has not lost any mass
1 and 2
1 and 3
2 and 3
1, 2 and 3
Platinum catalyses the reaction between
sulfur dioxide SO2 and oxygen O2 to form sulfur trioxide SO3. Which statement(s) 1, 2 or 3 is NOT correct? [rr-16] 1. less
sulfur trioxide is formed when more catalyst is used 2. the catalyst decreases the rate of reaction between
sulfur dioxide and oxygen 3. when the reaction is complete the platinum catalyst has gained mass
only 1
only 1 and 3
only 2 and 3
1, 2 and 3
The rate of reaction between acid and marble chips can be decreased by? [rr-17]
warming
stirring
using larger chips
using more acid
A small quantity of marble chips is added to a large excess acid. Carbon dioxide gas is formed. Which will double the amount of carbon dioxide formed? [rr-18]
mass of acid
mass of marble chips
mass of water
volume of acid
Limestone reacts with hydrochloric acid to produce carbon dioxide. A student set up four experiments A to D. Which experiment would you expect to go the fastest? [rr-19]
limestone powder, dilute acid at 20°C
limestone lumps, dilute acid at 40°C
limestone lumps, concentrated acid at 20°C
limestone powder, concentrated acid at 40°C
Limestone reacts with hydrochloric acid to produce carbon dioxide. A student set up four experiments A to D. Which experiment would you expect to go the slowest? [rr-20]
limestone powder, dilute acid at 20°C
limestone lumps, dilute acid at 20°C
limestone lumps, concentrated acid at 40°C
limestone powder, concentrated acid at 40°C
A small quantity of calcium carbonate is added to a large excess acid. Carbon dioxide gas is formed. Which of the following will halve the amount of carbon dioxide formed? [rr-21]
doubling the temperature of the acid
doubling the volume of acid
halving the mass of the acid
halving the mass of the calcium carbonate
Sodium thiosulfate solution reacts with hydrochloric acid to form sodium chloride,
sulfur dioxide, sulfur and water. The reaction can be followed by measuring the time it takes for enough of the
sulfur precipitate to form to obscure a black cross marked on white paper. Which will decrease the time it takes for the black cross to disappear? [rr-22]
increase the concentration of the hydrochloric acid
decrease the concentration of the sodium thiosulfate
cool the mixture
add more water to the mixture
Sodium thiosulfate solution reacts with hydrochloric acid to form sodium chloride,
sulfur dioxide, sulfur and water. The reaction can be followed by measuring the time it takes for enough of the
sulfur precipitate to form to obscure a black cross marked on white paper. Which will decrease the time it takes for the black cross to disappear? [rr-23]
decrease the concentration of the hydrochloric acid
increase the concentration of the sodium thiosulfate
cool the mixture
add more water to the mixture
Sodium thiosulfate solution reacts with hydrochloric acid to form sodium chloride,
sulfur dioxide, sulfur and water. The reaction can be followed by measuring the time it takes for enough of the
sulfur precipitate to form to obscure a black cross marked on white paper. Which will decrease the time it takes for the black cross to disappear? [rr-24]
decrease the concentration of the hydrochloric acid
decrease the concentration of the sodium thiosulfate
heat the mixture
add more water to the mixture
An experiment was carried out at a temperature of 25oC by dissolving 0.2g of small limestone granules into 30cm3 of hydrochloric acid. The acid concentration was 1.0 mol/dm3 and in excess so all the limestone dissolved. The reaction was followed by measuring the volume of carbon dioxide given off over a period of 6 minutes. A 2nd experiment was done in an identical manner but using 0.2g of limestone lumps. Which of the graphs W, X, Y or Z might you expect for the results? [rr-25]
graph line W
graph line X
graph line Y
graph line Z
An experiment was carried out at a temperature of 25oC by dissolving 0.2g of small limestone granules into 30cm3 of hydrochloric acid. The acid concentration was 1.0 mol/dm3 and in excess so all the limestone dissolved. The reaction was followed by measuring the volume of carbon dioxide given off over a period of 6 minutes. A 2nd experiment was done in an identical manner but using 0.4g of the same limestone granules. Which of the graphs W, X, Y or Z might you expect for the results? [rr-26]
graph line W
graph line X
graph line Y
graph line Z
An experiment was carried out at a temperature of 25oC by dissolving 0.2g of small limestone granules into 30cm3 of hydrochloric acid. The acid concentration was 1.0 mol/dm3 and in excess so all the limestone dissolved. The reaction was followed by measuring the volume of carbon dioxide given off over a period of 6 minutes. A 2nd experiment was done in an identical manner but using acid of 2.0mol/dm3 concentration. Which of the graphs W, X, Y or Z might you expect for the results? [rr-27]
graph line W
graph line X
graph line Y
graph line Z
An experiment was carried out at a temperature of 25oC by dissolving 0.2g of small limestone granules into 30cm3 of hydrochloric acid. The acid concentration was 1.0 mol/dm3 and in excess so all the limestone dissolved. The reaction was followed by measuring the volume of carbon dioxide given off over a period of 6 minutes. A 2nd experiment was done in an identical manner but using 0.1g of the same limestone granules. Which of the graphs W, X, Y or Z might you expect for the results? [rr-28]
graph line W
graph line X
graph line Y
graph line Z
An experiment was carried out at a temperature of 25oC by dissolving 0.2g of small limestone granules into 30cm3 of hydrochloric acid. The acid concentration was 1.0 mol/dm3 and in excess so all the limestone dissolved. The reaction was followed by measuring the volume of carbon dioxide given off over a period of 6 minutes. A 2nd experiment was done in an identical manner but at a temperature of 50oC. Which of the graphs W, X, Y or Z might you expect for the results? [rr-29]
graph line W
graph line X
graph line Y
graph line Z
An experiment was carried out at a temperature of 25oC by dissolving 0.2g of small limestone granules into 30cm3 of hydrochloric acid. The acid concentration was 1.0 mol/dm3 and in excess so all the limestone dissolved. The reaction was followed by measuring the volume of carbon dioxide given off over a period of 6 minutes. A 2nd experiment was done in an identical manner but using acid of 0.5mol/dm3 concentration. Which of the graphs W, X, Y or Z might you expect for the results? [rr-30]
graph line W
graph line X
graph line Y
graph line Z
Which will react the fastest with hydrochloric acid? [rr-31]
marble chips at 40oC
marble chips at 25oC
powdered marble at 40oC
powdered marble at 25oC
Which will react the slowest with hydrochloric acid? [rr-32]
marble chips at 40oC
marble chips at 25oC
powdered marble at 40oC
powdered marble at 25oC
An acid reacts with some tablets. The rate of reaction is decreased by? [rr-33]
cooling the tablets and the acid
crushing the tablets before adding the acid
stirring the tablets in the acid
using a more concentrated acid
A catalyst can increase the rate of a chemical reaction. Which of the following is also TRUE about catalysts? [rr-34]
their appearance is unchanged at the end of the reaction
they have to be a metal
they have to be a solid
they are chemically the same at the end of the reaction
A large amount of calcium carbonate (excess) is added to a small amount of dilute hydrochloric acid. Which will double the volume of carbon dioxide finally formed? [rr-35]
doubling the mass of calcium carbonate
doubling the volume of the hydrochloric acid
halving the mass of the hydrochloric acid
doubling the temperature
A large amount of calcium carbonate (excess) is added to a small amount of dilute hydrochloric acid. Which will double the volume of carbon dioxide finally formed? [rr-36]
doubling the mass of calcium carbonate
halving the volume of the hydrochloric acid
doubling the temperature
doubling the concentration of the acid
A large amount of calcium carbonate (excess) is added to a small amount of dilute hydrochloric acid. Which will halve the volume of carbon dioxide finally formed? [rr-37]
halving the mass of calcium carbonate
halving the volume of the hydrochloric acid
halving the temperature
doubling the concentration of the acid
A large amount of calcium carbonate (excess) is added to a small amount of dilute hydrochloric acid. Which will halve the volume of carbon dioxide finally formed? [rr-38]
doubling the mass of calcium carbonate
doubling the volume of the hydrochloric acid
halving the temperature
halving the concentration of the acid
Potatoes cook more quickly in boiling vegetable oil than in boiling water. This is because oil? [rr-39]
boils at a higher temperature than water
catalyses the cooking process
contains water
replaces the water in the potatoes
In a rates experiment the following carbon dioxide gas volumes were recorded by a student resulting from an acid-limestone reaction. The gas volume of CO2 formed at 1.5 min was omitted by accident.
time (min)
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
Vol (cm3)
0
8
15
?
26
30
33
36
38
39
40
40
40
What is the most likely value of the missing reading in cm3 of carbon dioxide? [rr-40]
18
21
23
24
In a rates experiment the following carbon dioxide gas volumes were recorded by a student resulting from an acid-limestone reaction.
time (min)
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
Vol (cm3)
0
8
15
21
26
30
33
36
38
39
40
40
40
At what time did the reaction stop? [rr-41]
4.5 min
6.0 min
5.0 min
5.5 min
In a rates experiment the following carbon dioxide gas volumes were recorded by a student resulting from an acid-limestone reaction.
time (min)
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
Vol (cm3)
0
8
15
21
26
30
33
36
38
39
40
40
40
At what approximate time is the speed of the reaction 8cm3gas/min? [rr-42]
2.0 to 2.5 min
0.0 t0 0.5 min
1.0 to 1.5 min
5.0 to 5.5 min
A gas was produced in a chemical reaction. The total volume of gas formed was measured at regular time intervals. Which graph would you expect the results to be like? [rr-43]
graph Q
graph W
graph Y
graph Z
Which is a chemical test for the gas hydrogen? [rr-44]
pops with lit splint
turns limewater cloudy
relights a glowing splint
bleaches damp litmus paper
Which is a chemical test for the gas carbon dioxide? [rr-45]
pops with a lit splint
turns limewater cloudy
relights a glowing splint
bleaches damp litmus paper
Which is a chemical test for the gas oxygen? [rr-46]
pops with a lit splint
turns limewater cloudy
relights a glowing splint
bleaches damp litmus paper
Which is a chemical test for the gas chlorine? [rr-47]
pops with a lit splint
turns limewater cloudy
relights a glowing splint
bleaches damp litmus paper
Which of the following gases is formed when a metal reacts with an acid? [rr-48]
hydrogen
carbon dioxide
oxygen
chlorine
Which of the following gases is formed when an acid reacts with a carbonate? [rr-49]
hydrogen
carbon dioxide
oxygen
chlorine
Which of the following is formed when a metal reacts with an acid? [rr-50]
O2
Cl2
H2
CO2
Which of the following is formed when a carbonate reacts with an acid? [rr-51]
O2
Cl2
H2
CO2
A solid was produced in a chemical reaction. The total mass of solid formed was measured at regular time intervals. Which graph would you expect the results to be like? [rr-52]
graph Y
graph W
graph Q
graph Z
A solid and a liquid reacted to produce a solution. The mass of the solid reactant was measured at regular time intervals. Which graph would you expect the results to be like? [rr-53]
graph W
graph Q
graph Y
graph Z
Two solids were heated and reacted to form another solid. The total mass of the solids was measured at regular time intervals. Which graph would you expect the results to be like? [rr-54]
graph W
graph Q
graph Y
graph Z
On mixing two reacting solutions a solid precipitate was formed. The mass of the solid precipitate was measured at regular time intervals. Which graph would you expect the results to be like? [rr-55]
graph W
graph Q
graph Y
graph Z
Limestone chips were reacted with acid in a beaker placed on a one pan electric balance. The mass of the reacting mixture was measured at regular time intervals. Which graph would you expect the results to be like? [rr-56]
graph W
graph Q
graph Y
graph Z
An experiment was carried out to dissolve small limestone granules into hydrochloric acid. Carbon dioxide gas is formed and was collected in a gas syringe. The initial results are marked as the 'original experiment'. The experiment was repeated after varying the reaction conditions (ie mass of limestone, size of limestone pieces, temperature or acid concentration). The speed of the reaction can be given in cm3/min, ie the speed at which carbon dioxide is formed. Which experiment is going at an approximate average speed of 30 cm3/min in the first half minute of the reaction? [rr-57]
graph line for experiment W
graph line for experiment X
graph line for experiment Y
graph line for experiment Z
An experiment was carried out to dissolve small limestone granules into hydrochloric acid. Carbon dioxide gas is formed and was collected in a gas syringe. The initial results are marked as the 'original experiment'. The experiment was repeated after varying the reaction conditions (ie mass of limestone, size of limestone pieces, temperature or acid concentration). The speed of the reaction can be given in cm3/min, ie the speed at which carbon dioxide is formed. Which experiment is going at an approximate average speed of 22 cm3/min in the first half minute of the reaction? [rr-58]
graph line for experiment W
graph line for experiment X
graph line for experiment Y
graph line for experiment Z
An experiment was carried out to dissolve small limestone granules into hydrochloric acid. Carbon dioxide gas is formed and was collected in a gas syringe. The initial results are marked as the 'original experiment'. The experiment was repeated after varying the reaction conditions (ie mass of limestone, size of limestone pieces, temperature or acid concentration). The speed of the reaction can be given in cm3/min, ie the speed at which carbon dioxide is formed. Which experiment is going at an approximate average speed of 6 cm3/min in the first minute of the reaction? [rr-59]
graph line for experiment W
graph line for experiment X
graph line for experiment Y
graph line for experiment Z
An experiment was carried out to dissolve small limestone granules into hydrochloric acid. Carbon dioxide gas is formed and was collected in a gas syringe. The initial results are marked as the 'original experiment'. The experiment was repeated after varying the reaction conditions (ie mass of limestone, size of limestone pieces, temperature or acid concentration). The speed of the reaction can be given in cm3/min, ie the speed at which carbon dioxide is formed. Which experiment is going at an approximate average speed of 3 cm3/min in the first minute of the reaction? [rr-60]
graph line for experiment W
graph line for experiment X
graph line for experiment Y
graph line for experiment Z
What would you increase, to increase the kinetic energy of particles involved in a chemical reaction? [rsa-1]
What would you decrease, to decrease the kinetic energy of particles involved in a chemical reaction? [rsa-2]
What must particles do with each other before they can react? [rsa-3]
What do you increase to make two gases react together faster at the same temperature? [rsa-4]
What do you decrease to make two gases react together more slowly at the same temperature? [rsa-5]
Limestone or marble chips are made of the chemical calcium carbonate (1). They both dissolve in hydrochloric acid (2), to produce a solution of calcium chloride (3), water (4) and carbon dioxide (5). Which of 1 to 5 is seen as the 'fizzing'? [rsa-6]
Limestone or marble chips are made of the chemical calcium carbonate (1). They both dissolve in hydrochloric acid (2), to produce a solution of calcium chloride (3), water (4) and carbon dioxide (5). Which of 1 to 5 is the 'salt' in the reaction? [rsa-7]
Limestone or marble chips are made of the chemical calcium carbonate (1). They both dissolve in hydrochloric acid (2), to produce a solution of calcium chloride (3), water (4) and carbon dioxide (5). Which of 1 to 5 has the formula HCl? [rsa-8]
Limestone or marble chips are made of the chemical calcium carbonate (1). They both dissolve in hydrochloric acid (2), to produce a solution of calcium chloride (3), water (4) and carbon dioxide (5). Which of 1 to 5 has the formula CaCO3? [rsa-9]
Limestone or marble chips are made of the chemical calcium carbonate (1). They both dissolve in hydrochloric acid (2), to produce a solution of calcium chloride (3), water (4) and carbon dioxide (5). Which of 1 to 5 has the formula CaCl2? [rsa-10]
Limestone or marble chips are made of the chemical calcium carbonate (1). They both dissolve in hydrochloric acid (2), to produce a solution of calcium chloride (3), water (4) and carbon dioxide (5). In what form would you add the marble to speed up the reaction? [rsa-11]
Limestone or marble chips are made of the chemical calcium carbonate (1). They both dissolve in hydrochloric acid (2), to produce a solution of calcium chloride (3), water (4) and carbon dioxide (5). In what form would you add the marble to slow down the reaction? [rsa-12]
Limestone or marble chips are made of the chemical calcium carbonate (1). They both dissolve in hydrochloric acid (2), to produce a solution of calcium chloride (3), water (4) and carbon dioxide (5). What could you reduce for the acid to slow the reaction down at the same temperature? [rsa-13]
Limestone or marble chips are made of the chemical calcium carbonate (1). They both dissolve in hydrochloric acid (2), to produce a solution of calcium chloride (3), water (4) and carbon dioxide (5). What could you increase for the acid to speed up the reaction at the same temperature? [rsa-14]
Calcium carbonate (limestone) were dissolved in hydrochloric acid under five different experimental conditions.
The carbon dioxide gas formed was collected in a gas syringe and the total volume of gas was recorded for the first six minutes.
The speed or 'rate of reaction' can be expressed as the rate of formation of carbon dioxide in cm3/min.
What is the average speed of the reaction in experiment W between 1 and 2 minutes in cm3/min? [rsa-15]
Calcium carbonate (limestone) were dissolved in hydrochloric acid under five different experimental conditions.
The carbon dioxide gas formed was collected in a gas syringe and the total volume of gas was recorded for the first six minutes.
The speed or 'rate of reaction' can be expressed as the rate of formation of carbon dioxide in cm3/min.
What is the average speed of the reaction in experiment X in the first half minute in cm3/min? [rsa-16]
This means a chemical reaction is? [am-1]
reversible
exothermic
endothermic
decomposition
A reaction which gives out heat to the surroundings is described as? [am-2]
reversible
exothermic
endothermic
decomposition
A reaction which takes in heat from the surroundings is described as? [am-3]
reversible
exothermic
endothermic
decomposition
For a chemical reaction, the word 'reversible' means? [am-4]
heat is alternately given out and taken in as the reaction proceeds
reactants can only be converted to products
the products and reactants of a reaction are in a state of balance
products can be readily converted back to reactants
A + B C + D For the type of reaction shown above, which statement is TRUE? [am-5]
from left to right is called the forward reaction
from right to left is called the equilibrium reaction
if left to right is exothermic, from right to left is also exothermic
if left to right is endothermic, from right to left is also endothermic
A + B C + D For the type of reaction shown above, which statement is TRUE? [am-6]
from left to right is called the reversible reaction
from right to left is called the backward reaction
if left to right is exothermic, from right to left is also exothermic
if left to right is endothermic, from right to left is also endothermic
A + B C + D For the type of reaction shown above, which statement is TRUE? [am-7]
from left to right is called the reversible reaction
from right to left is called the equilibrium reaction
if left to right is exothermic, from right to left is endothermic
if left to right is endothermic, from right to left is also endothermic
A + B C + D For the type of reaction shown above, which statement is TRUE? [am-7]
from left to right is called the reversible reaction
from right to left is called the equilibrium reaction
if left to right is exothermic, from right to left is also exothermic
if left to right is endothermic, from right to left is exothermic
The equation shows the effect of heat on the salt ammonium chloride. Which statement is TRUE about this reversible reaction? [am-9]
the gases formed are colourless
the formation of the solid is endothermic
ammonium gas is formed
chloride gas is formed
The equation shows the effect of heat on the salt ammonium chloride. Which statement is TRUE about this reversible reaction? [am-10]
the gases formed are colourless and green
the formation of the solid is exothermic
ammonium gas is formed
chloride gas is formed
The equation shows the effect of heat on the salt ammonium chloride. Which statement is TRUE about this reversible reaction? [am-11]
the gases formed are colourless and green
the formation of the solid is endothermic
ammonia gas is formed
chloride gas is formed
The equation shows the effect of heat on the salt ammonium chloride. Which statement is TRUE about this reversible reaction? [am-12]
the gases formed are colourless and green
the formation of the solid is endothermic
ammonium gas is formed
hydrogen chloride gas is formed
The equation shows the effect of heat on the salt ammonium chloride. Which statement is TRUE about this reversible reaction? [am-13]
the gases are formed by an endothermic reaction
the formation of the solid is a decomposition reaction
ammonium gas is formed
chloride gas is formed
The equation shows the effect of heat on the salt hydrated copper(II)
sulfate. Which statement is TRUE about this reversible reaction? [am-14]
the forward reaction (L to R) is exothermic
on heating, the hydrated solid changes colour from blue to white
the heating effect can be used as a test for water
the reaction is not reversible
The equation shows the effect of heat on the salt hydrated copper(II)
sulfate. Which statement is TRUE about this reversible reaction? [am-15]
the forward reaction (L to R) is exothermic
on heating, the hydrated solid changes colour from white to blue
the reverse reaction can be used as a test for water
the reaction is not reversible
The equation shows the effect of heat on the salt hydrated copper(II)
sulfate. Which statement is TRUE about this reversible reaction? [am-16]
the forward reaction (L to R) is exothermic
on heating, the hydrated solid changes colour from white to blue
the heating effect can be used as a test for water
the reaction is reversible
The equation shows the effect of heat on the salt hydrated copper(II)
sulfate. Which statement is TRUE about this reversible reaction? [am-17]
the forward reaction (L to R) is endothermic
on cooling the heated solid and adding water, it changes colour from blue to white
the heating effect can be used as a test for water
the reaction is not reversible
The equation shows the effect of heat on the salt hydrated copper(II)
sulfate. Which statement is TRUE about this reversible reaction? [am-18]
the reverse reaction (R to L) is endothermic
on cooling the heated solid and adding water, it changes colour from white to blue
the heating effect can be used as a test for water
the reaction is not reversible
The equation shows the effect of heat on the salt hydrated copper(II)
sulfate. Which statement is TRUE about this reversible reaction? [am-19]
the forward reaction (L to R) is exothermic
on cooling the heated solid and adding water, it changes colour from blue to white
the reverse reaction (R to L) is exothermic
the heating effect can be used as a test for water
The equation shows the effect of heat on the salt hydrated copper(II)
sulfate. Which statement is TRUE about this reversible reaction? [am-20]
the forward reaction (L to R) is exothermic
on cooling the heated solid and adding water, it changes colour from blue to white
the reverse reaction (R to L) is endothermic
the heating effect can be used to make anhydrous copper(II)
sulfate
If J is nitrogen, what is raw material E? [am-21]
air
water
methane
nitrogen monoxide
If E is air, gas J is? [am-22]
oxygen
nitrogen
methane
nitrogen monoxide
If G is methane and water, gas L is? [am-23]
oxygen
nitrogen
hydrogen
nitrogen monoxide
If L is hydrogen, raw materials G are? [am-24]
water and carbon dioxide
nitrogen and hydrogen
methane and oxygen
water and methane (natural gas)
Catalyst M is? [am-25]
iron
platinum
manganese dioxide
Devarda's alloy
Gas Q is? [am-26]
carbon monoxide
nitrogen monoxide
hydrogen
nitrogen
Acid R is? [am-27]
hydrochloric acid
ethanoic acid
nitric acid
sulfuric acid
Acid W is? [am-28]
hydrochloric acid
ethanoic acid
nitric acid
sulfuric acid
Salt T is? [am-29]
ammonium nitrate
sodium nitrate
ammonium chloride
sodium amide
After the gases are cooled and compressed, the ammonia separates by? [am-30]
crystallisation
condensation
distillation
filtration
Which is used as an artificial fertiliser? [am-31]
nitric acid
sodium
sulfate
ammonium
sulfate
ammonium hydroxide
Which is used as an artificial fertiliser? [am-32]
nitric acid
sodium
sulfate
ammonium hydroxide
ammonium nitrate
Which of the following is nitrogen gas? [am-33]
Which of the following is ammonia gas? [am-34]
Which of the following is methane gas? [am-35]
Which of the following is a nitrogen oxide? [am-36]
Which of the following is nitric acid? [am-37]
Which of the following is ammonium
sulfate? [am-38]
Which of the following is ammonium nitrate? [am-39]
Which of the following is
sulfuric acid? [am-40]
How many different elements make ammonium nitrate? [am-41]
3
9
4
6
How many atoms make up the formula of ammonium nitrate? [am-42]
3
9
4
6
How many different elements make up ammonium
sulfate? [am-43]
3
5
4
6
How many atoms make up the formula of ammonium
sulfate? [am-44]
4
7
11
15
Which is the most important element plants require from an artificial fertiliser like ammonium
sulfate? [am-45]
N
H
S
O
Approximately what % of air is nitrogen? [am-46]
20%
80%
50%
30%
The name of the industrial method to make ammonia is known as the? [am-47]
Contact Process
Bosch Synthesis
Haber Synthesis
Cracking Process
Which of these is a good reason for adding artificial fertiliser to soil? [am-48]
helping reduce water pollution
neutralising acid soil
helping reduce crop disease
increasing soil fertility
Which of these is a good reason for adding artificial fertiliser to soil? [am-49]
increasing the nitrogen content of soil
increasing the alkalinity of soil
helping reduce crop disease
helping reduce water pollution
Which of these is a problem caused by the over-use of artificial fertilisers like ammonium nitrate on fields of crops? [am-50]
too acidic rainwater run-off into rivers
pollution of domestic water supply
increase in insect attacks on crops
increase in crop disease
Which of these is a problem caused by the over-use of artificial fertilisers like ammonium nitrate on fields of crops? [am-51]
too acidic rainwater run-off into rivers
increase in insect attacks on crops
overgrowth of algae in streams and rivers
increase in crop disease
Which set of data is typical of the reaction in industry used to make ammonia in terms of temperature and pressure? [am-52]
50oC, 200 atmospheres
150oC, 20 atmospheres
900oC, 2000 atmospheres
450oC, 200 atmospheres
Which chemical change involves an oxidation of a nitrogen compound? [am-53]
ammonia + oxygen ==> nitrogen monoxide + water
ammonia + nitric acid ==> ammonium nitrate
methane + water ==> carbon monoxide + hydrogen
ammonium chloride ==> ammonia + hydrogen chloride
Which chemical change is a neutralisation reaction? [am-54]
ammonia + oxygen ==> nitrogen monoxide + water
ammonia + nitric acid ==> ammonium nitrate
methane + water ==> carbon monoxide + hydrogen
ammonium chloride ==> ammonia + hydrogen chloride
Which chemical change is a neutralisation reaction? [am-55]
ammonia + oxygen ==> nitrogen monoxide + water
methane + water ==> carbon monoxide + hydrogen
sulfuric acid + ammonia ==> ammonium
sulfate
ammonium chloride ==> ammonia + hydrogen chloride
Which chemical change is a thermal decomposition reaction? [am-56]
ammonia + oxygen ==> nitrogen monoxide + water
ammonia + nitric acid ==> ammonium nitrate
methane + water ==> carbon monoxide + hydrogen
ammonium chloride ==> ammonia + hydrogen chloride
The in the equation means the reaction is? [am-57]
reversible
decomposable
combustible
unpredictable
In the synthesis of ammonia what happens to the unreacted nitrogen and hydrogen? [am-58]
purified and let out into the atmosphere without causing pollution
recycled through the reaction chamber immediately
collected and stored for later ammonia production
burned to preheat the gases coming into the hot reactor to stop it cooling down
Ammonia is converted into the useful chemical product? [am-59]
nitrogen monoxide
nitrogen
nitric acid
nitromethane
Ammonia is converted into the useful chemical product? [am-60]
nitrogen monoxide
nitrogen
sodium
sulfate
ammonium
sulfate
Ammonia is converted into the useful chemical product? [am-61]
ammonium nitrate
nitrogen
nitromethane
nitrogen monoxide
A simple test for ammonia is? [am-62]
gives a squeaky pop! with a lit splint
turns damp red litmus blue
re-ignites a glowing splint
turns limewater milky
Ammonia dissolved in water is best described as a? [am-63]
weak acid solution
neutral salt solution
weak alkali solution
strong acid solution
The reaction to convert ammonia into artificial fertiliser salts, is an example of? [am-64]
oxidation
decomposition
equilibrium
neutralisation
On the reaction profile diagrams above, which energy change corresponds to the uncatalysed activation energy for the endothermic thermal
decomposition of ammonium chloride? [am-65]
profile 1, E1
profile 1, E3
profile 2, E5
profile 2, E6
On the reaction profile diagrams above, which energy change corresponds to the overall heat absorbed by the catalysed endothermic thermal
decomposition of ammonium chloride? [am-66]
profile 1, E1
profile 1, E3
profile 2, E5
profile 2, E6
On the reaction profile diagrams above, which energy change corresponds to the
activation energy for the iron catalysed exothermic formation of ammonia? [am-67]
profile 1, E1
profile 1, E3
profile 2, E5
profile 2, E6
On the reaction profile diagrams above, which energy change corresponds to the overall energy change for the iron catalysed exothermic formation of ammonia? [am-68]
profile 1, E2
profile 1, E3
profile 2, E5
profile 2, E6
On the reaction profile diagrams above, which energy change corresponds to the activation energy for the catalysed endothermic decomposition of ammonium chloride? [am-69]
profile 1, E2
profile 1, E3
profile 2, E5
profile 2, E6
On the reaction profile diagrams above, which energy change corresponds to the activation energy for the uncatalysed exothermic formation of ammonia? [am-70]
profile 1, E2
profile 2, E4
profile 1, E3
profile 2, E5
On the reaction profile diagrams above, which energy change corresponds to the overall energy change for the uncatalysed endothermic thermal decomposition ammonium chloride? [am-71]
profile 1, E2
profile 2, E4
profile 1, E3
profile 2, E5
On the reaction profile diagrams above, which energy change corresponds to the overall energy change for the uncatalysed exothermic formation of ammonia? [am-72]
profile 1, E2
profile 2, E4
profile 1, E3
profile 2, E6
[am-73] Which ratio numbers a, b and c are needed to balance the equation showing the formation of ammonia? a N2(g) + b H2(g) ==> c NH3(g)
1, 3 and 2
2, 3 and 2
1, 6 and 2
2, 3 and 6
[am-74] Which ratio numbers a, b, c and d are needed to balance the equation showing the oxidation of ammonia to nitrogen monoxide? a NH3(g) + b O2(g) ==> c NO(g) + d H2O(g)
4, 5, 2 and 3
4, 5, 4 and 6
2, 3, 4 and 6
2, 3, 2 and 3
[am-75] Which ratio numbers a, b, c and d are needed to balance the equation showing the overall conversion of nitrogen monoxide into nitric acid? a NO(g) + b H2O(l)+ c O2(g) ==> d HNO3(aq)
2, 2, 3 and 4
2, 4, 6 and 3
4, 2, 3 and 4
4, 4, 6 and 3
[am-76] Which ratio numbers a, b and c are needed to balance the equation showing the neutralisation of ammonia to form ammonium
sulfate? a NH3(aq) + b H2SO4(aq) ==> c(NH4)2SO4(aq)
1, 1 and 2
2, 2 and 1
1, 2 and 2
2, 1 and 1
[am-77] Which ratio numbers a, b and c are needed to balance the equation showing the neutralisation of ammonia to form ammonium nitrate? a NH3(aq) + b HNO3(aq) ==> c NH4NO3(aq)
1, 1 and 1
2, 2 and 1
1, 1 and 2
2, 1 and 2
[am-78] Which ratio numbers a, b, c and d are needed to balance the equation showing the production of hydrogen from methane (natural gas) and steam? a CH4(g) + b H2O(g) ==> c CO(g) + d H2(g)
2, 2, 2 and 3
1, 1, 1 and 3
1, 2, 2 and 6
2, 1, 1, and 3
Which is TRUE about the industrial synthesis of ammonia? [am-79]
the reaction is exothermic, so there are little energy costs in running the chemical plant
it is difficult to separate the ammonia from unreacted hydrogen and nitrogen because they have similar boiling or condensation points
it is more economic to get a low % of nitrogen/hydrogen mixture conversion to ammonia fast, than a high % yield more slowly
it is a costly process because it is an equilibrium reaction and you cannot get 100% conversion to ammonia
Which is TRUE about the industrial synthesis of ammonia? [am-80]
the reaction is exothermic, so there are little energy costs in running the chemical plant
it is difficult to separate the ammonia from unreacted hydrogen and nitrogen because they have similar boiling or condensation points
it is less economic to get a low % of nitrogen/hydrogen mixture conversion to ammonia fast, than wait longer for a high % yield of ammonia
it is a reasonably economic process because although it is an equilibrium reaction, you can get a low % conversion to ammonia fast and recycle unreacted nitrogen and hydrogen
Which is needed to bring about the conversion of nitrogen monoxide into nitric acid? [am-81]
oxygen and water
oxygen and hot platinum catalyst
hot iron catalyst and high pressure
water and an acid
Which is needed to bring about the conversion of ammonia into nitrogen monoxide? [am-82]
oxygen and water
oxygen and hot platinum catalyst
hot iron catalyst and high pressure
water and an acid
Which is needed to bring about the conversion of nitrogen and hydrogen into ammonia? [am-83]
oxygen and water
oxygen and hot platinum catalyst
hot iron catalyst and high pressure
water and an acid
Which is needed to bring about the conversion of ammonia into fertiliser salts? [am-84]
oxygen and water
oxygen and hot platinum catalyst
hot iron catalyst and high pressure
water and an acid
Which is TRUE about reversible reactions and chemical equilibrium? [am-85]
increase in temperature favours an endothermic reaction
decrease in temperature favours the reaction absorbing heat
increase in pressure favours a reaction forming the most gas molecules
decrease in pressure favours a reaction that removes gas molecules
Which is TRUE about reversible reactions and chemical equilibrium? [am-86]
increase in temperature favours the heat releasing reaction
decrease in temperature favours an exothermic reaction
increase in pressure favours a reaction forming gas molecules
decrease in pressure favours the reaction forming the least gas molecules
Which is TRUE about reversible reactions and chemical equilibrium? [am-87]
increase in temperature favours the heat releasing reaction
decrease in temperature favours an endothermic reaction
increase in pressure favours the reaction forming the least gas molecules
decrease in pressure does not favour a reaction forming gas molecules
Which is TRUE about reversible reactions and chemical equilibrium? [am-88]
increase in temperature favours an exothermic reaction
decrease in temperature favours a heat absorbing reaction
increase in pressure favours a reaction forming gas molecules
decrease in pressure favours the reaction forming the most gas molecules
The equation shows the synthesis of ammonia in which 46 kJ heat energy is released (given out) per mole of ammonia formed. Which is TRUE about this reaction? [am-89]
increased pressure favours a larger % of ammonia in the equilibrium mixture
decrease in temperature does not favour a larger % of ammonia in the equilibrium mixture
using a catalyst increases the % of ammonia in the equilibrium mixture
increasing both pressure and temperature favour ammonia formation
The equation shows the synthesis of ammonia in which 46 kJ heat energy is released (given out) per mole of ammonia formed. Which is TRUE about this reaction? [am-90]
increased pressure does not favour a larger % of ammonia in the equilibrium mixture
decrease in temperature favours a larger % of ammonia in the equilibrium mixture
using a catalyst increases the % of ammonia in the equilibrium mixture
increasing both pressure and temperature favour ammonia formation
The equation shows the synthesis of ammonia in which 46 kJ heat energy is released (given out) per mole of ammonia formed. Which is TRUE about this reaction? [am-91]
decreased pressure favours a larger % of ammonia in the equilibrium mixture
increase in temperature favours a larger % of ammonia in the equilibrium mixture
using a catalyst does not affect the % of ammonia in the equilibrium mixture
decreasing both pressure and temperature favour ammonia formation
The equation shows the synthesis of ammonia in which 46 kJ heat energy is released (given out) per mole of ammonia formed. Which is TRUE about this reaction? [am-91]
decreased pressure favours a larger % of ammonia in the equilibrium mixture
increase in temperature favours a larger % of ammonia in the equilibrium mixture
using a catalyst increases the % of ammonia in the equilibrium mixture
increasing pressure and decreasing temperature both favour ammonia formation
Which is TRUE about reversible reactions that have formed a chemical equilibrium? [am-93]
reactants are always changing into products
rate of forward reaction (L to R) is greater than the rate of the backward reaction (R to L)
the concentrations of reactants and products are constantly changing
using a catalyst increases the final amount of product formed
Which is TRUE about reversible reactions that have formed a chemical equilibrium? [am-94]
products stop changing into reactants
rate of forward reaction (L to R) is equal to the rate of the backward reaction (R to L)
the concentrations of reactants and products are constantly changing
using a catalyst increases the final amount of product formed
Which is TRUE about reversible reactions that have formed a chemical equilibrium? [am-95]
products stop changing into reactants
rate of forward reaction (L to R) is greater than the rate of the backward reaction (R to L)
the concentrations of reactants and products remain the same
using a catalyst increases the final amount of product formed
Which is TRUE about reversible reactions that have formed a chemical equilibrium? [am-96]
products stop changing into reactants
rate of forward reaction (L to R) is greater than the rate of the backward reaction (R to L)
the concentrations of reactants and products are constantly changing
using a catalyst does not increase the final amount of product formed
The equation above shows the making of hydrogen from methane (natural gas) and steam, for the manufacture of ammonia in the Haber Process. For every mole of methane reacted, 206 kJ of heat energy is absorbed (taken in) in forming the three moles of hydrogen. Which is TRUE about this reaction? [am-97]
decreasing the pressure favours a bigger % of hydrogen in the equilibrium mixture
increasing the temperature does not favour a bigger % of hydrogen in the equilibrium mixture
using a catalyst increases the final % of hydrogen in the equilibrium
increasing both pressure and temperature favours the formation of ammonia
The equation above shows the making of hydrogen from methane (natural gas) and steam, for the manufacture of ammonia in the Haber Process. For every mole of methane reacted, 206 kJ of heat energy is absorbed (taken in) in forming the three moles of hydrogen. Which is TRUE about this reaction? [am-98]
decreasing the pressure does not favour a bigger % of hydrogen in the equilibrium mixture
increasing the temperature favours a bigger % of hydrogen in the equilibrium mixture
using a catalyst increases the final % of hydrogen in the equilibrium
increasing both pressure and temperature favours the formation of ammonia
The equation above shows the making of hydrogen from methane (natural gas) and steam, for the manufacture of ammonia in the Haber Process. For every mole of methane reacted, 206 kJ of heat energy is absorbed (taken in) in forming the three moles of hydrogen. Which is TRUE about this reaction? [am-99]
decreasing the pressure does not favour a bigger % of hydrogen in the equilibrium mixture
increasing the temperature does not favour a bigger % of hydrogen in the equilibrium
using a catalyst does not increase the final % of hydrogen in the equilibrium
increasing both pressure and temperature favours the formation of ammonia
The equation above shows the making of hydrogen from methane (natural gas) and steam, for the manufacture of ammonia in the Haber Process. For every mole of methane reacted, 206 kJ of heat energy is absorbed (taken in) in forming the three moles of hydrogen. Which is TRUE about this reaction? [am-100]
decreasing the pressure does not favour a bigger % of hydrogen in the equilibrium mixture
increasing the temperature does not favour a bigger % of hydrogen in the equilibrium
using a catalyst increases the final % of hydrogen in the equilibrium
decreasing the pressure and increasing the temperature both favour the formation of ammonia
Which chemical change involves an oxidation of a hydrocarbon compound? [am-101]
methane + water ==> carbon monoxide + hydrogen
ammonia + nitric acid ==> ammonium nitrate
ammonia + oxygen ==> nitrogen monoxide + water
ammonium chloride ==> ammonia + hydrogen chloride
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