Which halogen at room temperature and pressure is a green gas? [gp7-1]
fluorine
chlorine
bromine
iodine
Which halogen at room temperature and pressure is a dark red liquid? [gp7-2]
fluorine
chlorine
bromine
iodine
Which halogen at room temperature and pressure is a dark solid? [gp7-3]
fluorine
chlorine
bromine
iodine
Which halogen on heating gives an orange-brown vapour? [gp7-4]
fluorine
chlorine
bromine
iodine
Which halogen on heating gives a purple vapour? [gp7-5]
fluorine
chlorine
bromine
iodine
Which following is TRUE about the trend DOWN the Group 7 Halogens with increase in atomic number? [gp7-23]
the melting points increase
the boiling points decrease
the reactivity increases
the atoms get smaller
Which following is TRUE about the trend DOWN the Group 7 Halogens with increase in atomic number? [gp7-24]
the melting points decrease
the boiling points increase
the reactivity increases
the atoms get smaller
Which following is TRUE about the trend DOWN the Group 7 Halogens with increase in atomic number? [gp7-25]
the colour of the element gets lighter
the boiling points decrease
the reactivity decreases
the atoms get smaller
Which following is TRUE about the trend DOWN the Group 7 Halogens with increase in atomic number? [gp7-26]
the colour of the element gets lighter
the boiling points decrease
the reactivity increases
the atoms get larger
Which following is TRUE about the trend DOWN the Group 7 Halogens with increase in atomic number? [gp7-27]
the colour of the element gets darker
the melting points decrease
the reactivity increases
the atoms get smaller
Which four numbers a, b, c and d are required to balance the equation? [gp7-28] a Cl2(aq) + b KI(aq) ==> c KCl(aq) + d I2(aq)
1 2 2 1
2 1 1 2
1 2 1 2
2 1 2 1
Which statement is TRUE about the Group 7 Halogens? [gp7-29]
they have low melting points
they are good conductors of heat
the first three are gases at room temperature and pressure
they are strong materials when solid
Which statement is TRUE about the Group 7 Halogens? [gp7-30]
they have high melting points
they are poor conductors of heat
the first three are gases at room temperature and pressure
they are strong materials when solid
Which statement is TRUE about the Group 7 Halogens? [gp7-31]
they have high boiling points
they are good conductors of electricity
the first two are gases at room temperature and pressure
they are strong materials when solid
Which statement is TRUE about the Group 7 Halogens? [gp7-32]
they have high boiling points
they are good conductors of electricity
only the first one is a gas at room temperature and pressure
they are brittle and crumbly materials when solid
Which statement is TRUE about the Group 7 Halogens? [gp7-33]
they have low boiling points
they are good conductors of electricity
only the first one is a gas at room temperature and pressure
they exist as single atoms at room temperature
Which statement is TRUE about the Group 7 Halogens? [gp7-34]
they have high boiling points
they are poor conductors of electricity
only the first one is a gas at room temperature and pressure
they exist as single atoms at room temperature
Which statement is TRUE about the Group 7 Halogens? [gp7-35]
they have high boiling points
they are good conductors of electricity
all their vapours are coloured
they exist as single atoms at room temperature
Which statement is TRUE about the Group 7 Halogens? [gp7-36]
they have high boiling points
they are good conductors of electricity
all their vapours are colourless
they exist as diatomic molecules X2 at room temperature
Which is TRUE about the Group 7 Halogens? [gp7-37]
form negative ions of charge -1
form ionic compounds with other non-metallic elements
form covalent compounds with metallic elements
a less reactive halogen can displace a more reactive one from its ionic salt
Which is TRUE about the Group 7 Halogens? [gp7-38]
form negative ions of charge -2
form covalent compounds with other non-metallic elements
form ionic compounds with hydrogen
a less reactive halogen can displace a more reactive one from its ionic salt
Which is TRUE about the Group 7 Halogens? [gp7-39]
form negative ions of charge -2
form ionic compounds with other non-metallic elements
form ionic compounds with metallic elements
a less reactive halogen can displace a more reactive one from its ionic salt
Which is TRUE about the Group 7 Halogens? [gp7-40]
form positive ions of charge +1
form ionic compounds with other non-metallic elements
form covalent compounds with metallic elements
a more reactive halogen can displace a less reactive one from its ionic salt
Which is formed at the positive electrode (+ anode) during the electrolysis of brine (aqueous sodium chloride solution)? [gp7-41]
chlorine
hydrogen
sodium hydroxide
sodium chlorate(I)
Which is formed at the negative electrode (- cathode) during the electrolysis of brine (aqueous sodium chloride solution)? [gp7-42]
chlorine
hydrogen
sodium hydroxide
sodium chlorate(I)
Which is left after the electrolysis of brine (aqueous sodium chloride solution)? [gp7-43]
chlorine
hydrogen
sodium hydroxide
sodium chlorate(I)
Which is made by combining two of the products from the electrolysis of brine (aqueous sodium chloride solution)? [gp7-44]
chlorine
hydrogen
sodium hydroxide
sodium chlorate(I)
Which is a suitable test for the product formed at the positive electrode (+ anode) during the electrolysis of brine (aqueous sodium chloride solution)? [gp7-45]
bleaches damp blue litmus
squeaky pop with lit splint
turns universal indicator from green to purple
turns universal indicator from green to red
Which is a suitable test for the product formed at the negative electrode (- cathode) during the electrolysis of brine (aqueous sodium chloride solution)? [gp7-46]
bleaches damp blue litmus
squeaky pop with lit splint
turns universal indicator from green to purple
turns universal indicator from green to red
Which is a suitable test for the product left after the electrolysis of brine (aqueous sodium chloride solution)? [gp7-47]
bleaches damp blue litmus
squeaky pop with lit splint
turns universal indicator from green to purple
turns universal indicator from green to red
Which is a suitable test for the product formed by combining sodium hydroxide and chlorine from the electrolysis of brine (aqueous sodium chloride solution)? [gp7-48]
bleaches damp blue litmus
squeaky pop with lit splint
turns universal indicator from green to purple
turns red litmus paper blue and bleaches it white
Which is used in the manufacture of ceramics? [gp7-49]
sodium hydroxide
silver chloride
chlorine
hydrogen
Which is used in the manufacture of photographic film? [gp7-50]
sodium hydroxide
silver chloride
chlorine
hydrogen
Which is used in the manufacture of disinfectants? [gp7-51]
hydrochloric acid
silver chloride
chlorine
hydrogen
Which is used in the manufacture of margarine? [gp7-52]
sodium hydroxide
silver chloride
chlorine
hydrogen
Which is used in the manufacture of PVC plastic? [gp7-53]
chlorine
hydrogen
sodium chlorate(I)
hydrochloric acid
Which is used in the manufacture of ammonia? [gp7-54]
chlorine
hydrogen
sodium hydroxide
hydrochloric acid
Which is used in the manufacture of detergent soaps? [gp7-55]
chlorine
hydrogen
sodium hydroxide
hydrogen chloride
Which is used with water to make a well known acid? [gp7-56]
sodium chlorate(I)
hydrogen
sodium hydroxide
hydrogen chloride
Which is used in the manufacture of hydrochloric acid? [gp7-57]
hydrogen
sodium hydroxide
sodium chlorate
silver chloride
Which is used in the manufacture of paper? [gp7-58]
hydrogen
sodium hydroxide
chlorine
silver bromide
Which is used to kill bacteria in water? [gp7-58]
hydrochloric acid
sodium hydroxide
chlorine
silver bromide
Which is used in the manufacture of photographic film? [gp7-60]
hydrogen
sodium hydroxide
sodium chlorate
silver bromide
Which is used to manufacture of bleaches? [gp7-61]
chlorine
hydrogen
silver iodide
hydrochloric acid
Which is used in the manufacture of the soluble salt of the acidic medication Aspirin? [gp7-62]
chlorine
sodium hydroxide
silver iodide
sodium chlorate(I)
Which is used in the manufacture of photographic film? [gp7-63]
chlorine
hydrogen
silver iodide
sodium hydroxide
Which is used in the manufacture of bleaches? [gp7-64]
hydrochloric acid
hydrogen
silver iodide
sodium hydroxide
Which correctly describes a property of the compound formed when a halogen X (eg Cl, Br, I) combines with an Alkali Metal M (eg Li, Na, K etc.)? [gp7-89]
the solid is a poor conductor
low melting point
silvery solid
will not conduct when liquid or when dissolved in water
Which correctly describes a property of the compound formed when a halogen X (eg Cl, Br, I) combines with an Alkali Metal M (eg Li, Na, K etc.)? [gp7-90]
the solid is a good conductor
high melting point
silvery solid
will not conduct when liquid or when dissolved in water
Which correctly describes a property of the compound formed when a halogen X (eg Cl, Br, I) combines with an Alkali Metal M (eg Li, Na, K etc.)? [gp7-91]
the solid is a good conductor
has a low boiling point
white or colourless solid
will not conduct when liquid or when dissolved in water
Which correctly describes a property of the compound formed when a halogen X (eg Cl, Br, I) combines with an Alkali Metal M (eg Li, Na, K etc.)? [gp7-92]
the solid is a good conductor
has a low boiling point
silvery solid
will conduct when liquid or when dissolved in water
Which does NOT represent a possible reaction? [gp7-93]
Which is the most reactive halogen listed? [gp7-97]
chlorine
bromine
iodine
astatine
Which is the least reactive halogen listed? [gp7-98]
chlorine
iodine
bromine
fluorine
Which quartet of hazard warning symbols should ALL be on a cylinder of chlorine? [gp7-99]
Which pair of hazard warning symbols should BOTH be on a bottle of hydrochloric acid? [gp7-100]
[gp7-6] Which four numbers a, b, c and d are required in the ratio to balance the equation? a Cl2(aq) + b KBr(aq) ==> c KCl(aq) + d Br2(aq)
1 2 2 1
2 1 1 1
1 1 2 2
2 2 1 2
[gp7-7] Which four numbers a, b, c and d are required in the ratio to balance the equation? a Br2(aq) + b NaI(aq) ==> c NaBr(aq) + d I2(aq)
1 2 1 2
1 2 2 1
1 1 2 2
2 2 1 2
[gp7-8] Which four numbers a, b, c and d are required in the ratio to balance the equation? a Cl2(aq) + b CaI2(aq) ==> c CaCl2(aq) + d I2(s)
2 1 2 1
1 2 2 2
1 1 1 1
2 2 1 2
[gp7-9] Which four numbers a, b, c and d are required in the ratio to balance the equation? a AlBr3(aq) + b Cl2(aq) ==> c AlCl3(aq) + d Br2(s)
1 3 2 2
1 3 1 3
3 2 2 2
2 3 2 3
[gp7-10] Which five numbers a, b, c, d and e are required in the ratio to balance the equation? a CaCO3(s) + b HCl(aq) ==> c CaCl2(aq) + d H2O(l) + e CO2(g)
1 2 1 1 1
2 2 1 2 1
1 1 1 1 1
2 1 2 2 2
[gp7-11] Which five numbers a, b, c, d and e are required in the ratio to balance the equation? a Na2CO3(s) + b HCl(aq) ==> c NaCl(aq) + d H2O(l) + e CO2(g)
1 4 4 2 2
1 2 2 1 1
2 2 4 2 2
2 2 2 1 1
[gp7-12] Which five numbers a, b, c, d and e are required in the ratio to balance the equation? a Tl2(CO3)3(s) + b HCl(aq) ==> c TlCl3(aq) + d H2O(l) + e CO2(g)
2 6 4 3 6
1 3 2 6 2
1 6 2 3 3
2 3 4 3 6
[gp7-13] Which three numbers a, b and c are required in the ratio to balance the equation? a Na(s) + b Cl2(g) ==> c NaCl(s)
2 1 2
1 1 1
1 2 1
2 1 1
[gp7-14] Which three numbers a, b and c are required in the ratio to balance the equation? a Al(s) + b Cl2(g) ==> c AlCl3(s)
1 3 1
2 3 2
2 2 3
1 3 2
[gp7-15] Which three numbers a, b and c are required in the ratio to balance the equation? a Ca(s) + b Cl2(g) ==> c CaCl2(s)
1 2 1
1 1 2
1 1 1
2 2 1
[gp7-16] Which three numbers a, b and c are required in the ratio to balance the equation? a P(s) + b Cl2(g) ==> c PCl5(s) ?
1 5 1
1 5 2
2 5 4
2 5 2
[gp7-17] Which four numbers a, b, c and d are required in the ratio to balance the equation? a NaOH(aq) + b HCl(aq) ==> c NaCl(aq) + d H2O(l)
1 1 1 1
1 2 2 1
2 1 1 2
1 2 2 1
[gp7-18] Which four numbers a, b, c and d are required in the ratio to balance the equation? a Ca(OH)2(aq) + b HCl(aq) ==> c CaCl2(aq) + d H2O(l)
1 2 1 1
1 2 1 2
2 1 1 2
2 2 2 1
[gp7-19] Which four numbers a, b, c and d are required in the ratio to balance the equation? a Al(OH)3(s) + b HCl(aq) ==> c AlCl3(aq) + d H2O(l)
2 6 2 3
1 6 2 6
1 3 1 3
2 3 2 3
[gp7-20] Which four numbers a, b, c and d are required in the ratio to balance the equation? a Fe2O3(s) + b HCl(aq) ==> c FeCl3(aq) + d H2O(l)
2 6 2 3
1 6 2 6
1 3 1 3
1 6 2 3
[gp7-21] Which four numbers a, b, c and d are required in the ratio to balance the equation? a MgO(s) + b HCl(aq) ==> c MgCl2(aq) + d H2O(l)
1 2 1 1
1 1 1 1
2 2 1 2
1 4 1 2
[gp7-22] Which four numbers a, b, c and d are required in the ratio to balance the equation? a Li2O(s) + b HCl(aq) ==> c LiCl(aq) + d H2O(l)
1 2 1 1
1 1 1 1
1 2 2 1
1 2 1 2
Which is TRUE about the compounds formed by reacting a Halogen (X) with hydrogen gas? [gp7-65]
the reaction is given by the equation: H2 + X2 ==> 2HX
the liquid will be a good electrical conductor
they will have a high melting and boiling point
in water form an alkaline solution of pH 14
Which is TRUE about the compounds formed by reacting a Halogen (X) with hydrogen gas? [gp7-66]
the reaction is given by the equation: H + X ==> HX
the liquid will be a poor electrical conductor
they will have a high melting and boiling point
in water form an alkaline solution of pH 14
Which is TRUE about the compounds formed by reacting a Halogen (X) with hydrogen gas? [gp7-67]
the reaction is given by the equation: H + X ==> HX
the liquid will be a good electrical conductor
they will have a low melting and boiling point
in water form an alkaline solution of pH 14
Which is TRUE about the compounds formed by reacting a Halogen (X) with hydrogen gas? [gp7-68]
the solution of the compound in water is a poor conductor
the liquid will be a good electrical conductor
they will have a high melting and boiling point
in water forms an acid solution of pH 1
Which is TRUE about the compounds formed by reacting a Halogen (X) with hydrogen gas? [gp7-69]
the solution of the compound in water is a good conductor
the liquid will be a good electrical conductor
they will have a high melting and boiling point
in water form a neutral solution of pH 7
Which is TRUE about the compounds formed by reacting a Halogen (X) with hydrogen gas? [gp7-70]
the solution of the compound in water is a poor conductor
the liquid will be a poor electrical conductor
they are coloured gases or vapours
in water they form an alkaline solution of pH 14
Which is TRUE about the compounds formed by reacting a Halogen (X) with hydrogen gas? [gp7-71]
the solution of the compound in water is a poor conductor
the liquid will be a good electrical conductor
they are colourless gases
in water they form a neutral solution of pH 7
Which is TRUE about the compounds formed by reacting a Halogen (X) with hydrogen gas? [gp7-72]
the solution of the compound in water is a poor conductor
the liquid will be a poor electrical conductor
they are coloured gases or vapours
in water form solutions which neutralise alkalis to form salts
Which helps explain why the Halogens get less reactive down the Group with increase in atomic number? [gp7-73]
down the group the atoms get larger with an increasing number of electron shells used
down the group the outer electrons are nearer to the positive nucleus
down the group the outer electrons are more strongly attracted to the positive nucleus
down the group the electrons are more easily lost
Which helps explain why the Halogens get less reactive down the Group with increase in atomic number? [gp7-74]
down the group the atoms get smaller with an increasing number of electron shells used
down the group the outer electrons are further from the positive nucleus
down the group the outer electrons are more strongly attracted to the positive nucleus
down the group the electrons are more easily lost
Which helps explain why the Halogens get less reactive down the Group with increase in atomic number? [gp7-75]
down the group the atoms get smaller with an increasing number of electron shells used
down the group the outer electrons are nearer to the positive nucleus
down the group the outer electrons are less strongly attracted to the positive nucleus
down the group the electrons are more easily gained
Which helps explain why the Halogens get less reactive down the Group with increase in atomic number? [gp7-76]
down the group the atoms get smaller with an increasing number of electron shells used
down the group the outer electrons are nearer to the positive nucleus
down the group the outer electrons are more strongly attracted to the positive nucleus
down the group the outer electrons are less easily gained
The diagram shows a simple laboratory demonstration of the electrolysis of brine (aqueous sodium chloride solution, NaCl(aq)). Which is a TRUE statement about this process? [gp7-77]
the positive electrode (anode) equation is: 2Cl-(aq)) ==> Cl2(g) + 2e-
the negative (cathode) electrode equation is: H+(aq)) + e- ==> H2(g)
the positive electrode process is a reduction
the negative electrode process is an oxidation
The diagram shows a simple laboratory demonstration of the electrolysis of brine (aqueous sodium chloride solution, NaCl(aq)). Which is a TRUE statement about this process? [gp7-78]
the positive electrode (anode) equation is: Cl-(aq)) ==> Cl2(g) + e-
the negative (cathode) electrode equation is: 2H+(aq)) + 2e- ==> H2(g)
the positive electrode process is a reduction
the negative electrode process is an oxidation
The diagram shows a simple laboratory demonstration of the electrolysis of brine (aqueous sodium chloride solution, NaCl(aq)). Which is a TRUE statement about this process? [gp7-79]
the negative electrode (cathode) equation is: 2Cl-(aq)) ==> Cl2(g) + 2e-
the positive (anode) electrode equation is: 2H+(aq)) + 2e- ==> H2(g)
the positive electrode process is an oxidation
the negative electrode process involves electron loss
The diagram shows a simple laboratory demonstration of the electrolysis of brine (aqueous sodium chloride solution, NaCl(aq)). Which is a TRUE statement about this process? [gp7-80]
the negative electrode (cathode) equation is: 2Cl-(aq)) ==> Cl2(g) + 2e-
the positive (anode) electrode equation is: 2H+(aq)) + 2e- ==> H2(g)
the positive electrode process involves electron gain
the negative electrode process involves reduction
The displacement reaction between chlorine and potassium bromide can be represented by the ionic-redox equation: Cl2(aq) + 2Br-(aq)) ==> 2Cl-(aq)) + Br2(aq) Which statement is CORRECT? [gp7-81]
chlorine is reduced
bromide is reduced
chlorine is the reducing agent
bromide is the oxidising agent
The displacement reaction between chlorine and potassium bromide can be represented by the ionic-redox equation: Cl2(aq) + 2Br-(aq)) ==> 2Cl-(aq)) + Br2(aq) Which statement is CORRECT? [gp7-82]
chlorine is oxidised
bromide is oxidised
chlorine is the reducing agent
bromide is the oxidising agent
The displacement reaction between chlorine and potassium bromide can be represented by the ionic-redox equation: Cl2(aq) + 2Br-(aq)) ==> 2Cl-(aq)) + Br2(aq) Which statement is CORRECT? [gp7-83]
chlorine is oxidised
bromide is reduced
chlorine is the oxidising agent
chloride is the reducing agent
The displacement reaction between chlorine and potassium bromide can be represented by the ionic-redox equation: Cl2(aq) + 2Br-(aq)) ==> 2Cl-(aq)) + Br2(aq) Which statement is CORRECT? [gp7-84]
chlorine is oxidised
bromide is reduced
chloride is the oxidising agent
bromide is the reducing agent
Which is the correct ionic-redox equation for the reaction between chlorine and potassium iodide? [gp7-85]
Cl2(aq) + 2I-(aq)) ==> 2Cl-(aq)) + I2(aq)
Cl(aq)) + K+I-(aq)) ==> K+Cl-(aq)) + I(aq))
Cl2(aq) + I-(aq)) ==> Cl-(aq)) + I2(aq)
Cl2(aq) + 2KI(aq)) ==> 2KCl(aq)) + I2(aq)
Which is the correct ionic-redox equation for the reaction between bromine and potassium iodide? [gp7-86]
Br(aq)) + K+I-(aq)) ==> K+Br-(aq)) + I(aq))
Br2(aq) + 2I-(aq)) ==> 2Br-(aq)) + I2(aq)
Br2(aq) + I-(aq)) ==> Br-(aq)) + I2(aq)
Br2(aq) + 2KI(aq)) ==> 2KBr(aq)) + I2(aq)
Which is a possible ionic-redox equation for the reaction between a halogen and a halide salt solution? [gp7-87]
I2(aq) + 2Cl-(aq)) ==> 2I-(aq)) + Cl2(aq)
Br2(aq) + 2F-(aq)) ==> 2Br-(aq)) + F2(aq)
Cl2(aq) + 2I-(aq)) ==> 2Cl-(aq)) + I2(aq)
I2(aq) + 2Br-(aq)) ==> 2I-(aq)) + Br2(aq)
Which is a possible ionic-redox equation for the reaction between a halogen and a halide salt solution? [gp7-88]
I2(aq) + 2Cl-(aq)) ==> 2I-(aq)) + Cl2(aq)
Br2(aq) + 2F-(aq)) ==> 2Br-(aq)) + F2(aq)
I2(aq) + 2Br-(aq)) ==> 2I-(aq)) + Br2(aq)
Br2(aq) + 2I-(aq)) ==> 2Br-(aq)) + I2(aq)
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Which following is TRUE about the trend DOWN the Group 7 Halogens with increase in atomic number? [gp7-23]
Which four numbers a, b, c and d are required to balance the equation? [gp7-28]
Which statement is TRUE about the Group 7 Halogens? [gp7-29]
Which is TRUE about the Group 7 Halogens? [gp7-37]
Which is formed at the positive electrode (+ anode) during the electrolysis of brine (aqueous sodium chloride solution)? [gp7-41]
Which is used in the manufacture of ceramics? [gp7-49]
Which is used in the manufacture of photographic film? [gp7-50]
Which is used in the manufacture of disinfectants? [gp7-51]
Which is used in the manufacture of margarine? [gp7-52]
Which is used in the manufacture of PVC plastic? [gp7-53]
Which is used in the manufacture of ammonia? [gp7-54]
Which is used with water to make a well known acid? [gp7-56]
Which is used to kill bacteria in water? [gp7-58]
Which correctly describes a property of the compound formed when a halogen X (eg Cl, Br, I) combines with an Alkali Metal M (eg Li, Na, K etc.)? [gp7-89]
Which pair of hazard warning symbols should BOTH be on a bottle of hydrochloric acid? [gp7-100]
[gp7-6] Which four numbers a, b, c and d are required in the ratio to balance the equation?
