Which of the following is a chemical test for the gas hydrogen? [id-01]
pops with lit splint
turns limewater cloudy
relights a glowing splint
bleaches damp litmus paper white
Which of the following is a chemical test for the gas carbon dioxide? [id-02]
pops with a lit splint
turns limewater cloudy/milky (white precipitate)
relights a glowing splint
bleaches damp litmus paper white
Which of the following is a chemical test for the gas oxygen? [id-03]
pops with a lit splint
turns limewater cloudy
relights a glowing splint
bleaches damp litmus paper white
Which of the following is a chemical test for the gas chlorine? [id-04]
pops with a lit splint
turns limewater cloudy
relights a glowing splint
bleaches damp litmus paper white
Which gas is formed when a metal reacts with an acid? [id-05]
hydrogen, H2
carbon dioxide, CO2
oxygen, O2
chlorine, Cl2
Which gas is formed when an acid reacts with a carbonate? [id-06]
hydrogen, H2
carbon dioxide, CO2
oxygen, O2
chlorine, Cl2
A gas turns damp red litmus paper blue. The gas is? [id-07]
carbon dioxide, CO2
oxygen, O2
ammonia, NH3
sulfur dioxide, SO2
A gas turns damp orange potassium dichromate(VI) paper green. The gas is? [id-08]
carbon dioxide, CO2
oxygen, O2
ammonia, NH3
sulfur dioxide, SO2
A brown solution of a substance turns dark blue when a drop of starch solution was added. The substance is most likely to be? [id-09]
iodine, I2
chlorine, Cl2
bromine, Br2
sulfur dioxide, SO2
Which of the following descriptions describes a simple chemical test for chloride ions in a solution? [id-10]
A few drops of dilute hydrochloric acid are added to the solution followed by a few drops of barium chloride or barium nitrate solution.
A few drops of dilute nitric acid are added to the solution followed by a few drops of silver nitrate solution.
A few cm3 of dilute hydrochloric acid is added and any gas formed is tested with limewater.
A few cm3 of dilute sodium hydroxide is added and any gas formed is tested with red litmus.
A few cm3 of dilute nitric acid followed by a few drops of silver nitrate solution is added to a solution of a salt. If a white precipitate forms, which ion from the salt is most likely to be in the solution? (Extra advanced level observation: The white precipitate dissolves in ammonia solution.) [id-11]
sulfate ion, SO42-
chloride ion, Cl-
bromide ion, Br-
iodide ion, I-
A few cm3 of dilute nitric acid followed by a few drops of silver nitrate solution is added to a solution of a salt. If a cream precipitate forms, which ion from the salt is most likely to be in the solution? (Extra advanced level observation: The cream precipitate slightly dissolves in conc. ammonia solution.) [id-12]
sulfate ion, SO42-
chloride ion, Cl-
bromide ion, Br-
iodide ion, I-
A few cm3 of dilute nitric acid followed by a few drops of silver nitrate solution is added to a solution of a salt. If a pale yellow precipitate forms, which ion from the salt is most likely to be in the solution? (Extra advanced level observation: The pale yellow precipitate is insoluble with conc. ammonia solution.) [id-13]
sulfate ion, SO42-
chloride ion, Cl-
bromide ion, Br-
iodide ion, I-
Which of the following descriptions describes a simple chemical test for
sulfate ions in a solution? [id-14]
A few drops of dilute hydrochloric acid are added to the solution followed by a few drops of barium chloride or barium nitrate solution.
A few drops of dilute nitric acid are added to the solution followed by a few drops of silver nitrate solution.
A few cm3 of dilute hydrochloric acid is added and any gas formed is tested with limewater.
A few cm3 of dilute sodium hydroxide is added, the mixture gently warmed and any gas formed is tested with red litmus.
Which of the following descriptions describes a simple chemical test for carbonate ions in a solution? [id-15]
A few drops of dilute hydrochloric acid are added to the solution followed by a few drops of barium chloride or barium nitrate solution.
A few drops of dilute nitric acid are added to the solution followed by a few drops of silver nitrate solution.
A few cm3 of dilute hydrochloric acid is added and any gas formed is tested with limewater.
A few cm3 of dilute sodium hydroxide is added, the mixture gently warmed and any gas formed is tested with red litmus.
Which of the following descriptions describes a simple chemical test for ammonium ions in a solution? [id-16]
A few drops of dilute hydrochloric acid are added to the solution followed by a few drops of barium chloride or barium nitrate solution.
A few drops of dilute nitric acid are added to the solution followed by a few drops of silver nitrate solution.
A few cm3 of dilute hydrochloric acid is added and any gas formed is tested with limewater.
A few cm3 of dilute sodium hydroxide is added, the mixture gently warmed and any gas formed is tested with red litmus.
A few drops of sodium hydroxide solution was added to a metal salt solution. A dark green gelatinous precipitate was formed. Which metal ion (cation) was present in the salt solution? [id-17]
iron(II) ion, Fe2+
iron(III) ion, Fe3+
copper(II) ion, Cu2+
zinc ion, Zn2+
A few drops of sodium hydroxide solution was added to a metal salt solution. A brown gelatinous precipitate was formed. Which metal ion (cation) was present in the salt solution? [id-18]
iron(II) ion, Fe2+
iron(III) ion, Fe3+
copper(II) ion, Cu2+
zinc ion, Zn2+
A few drops of sodium hydroxide solution was added to a metal salt solution. A blue gelatinous precipitate was formed. Which metal ion (cation) was present in the salt solution? [id-19]
iron(II) ion, Fe2+
iron(III) ion, Fe3+
copper(II) ion, Cu2+
zinc ion, Zn2+
A few drops of sodium hydroxide solution was added to a metal salt solution. A white gelatinous precipitate was formed. Which metal ion (cation) was present in the salt solution? (Advanced level note: The white precipiate dissolves in excess dil. sodium hydroxide to give a clear colourless solution) [id-20]
iron(II) ion, Fe2+
iron(III) ion, Fe3+
copper(II) ion, Cu2+
zinc ion, Zn2+
A sample of a salt was dissolved in hydrochloric acid. A platinum wire was dipped into the solution and then placed in a roaring bunsen flame. A bright yellow flame colour was produced. From this 'flame test' observation, what was the identity of the metal ion in the salt? [id-21]
sodium ion, Na+
copper(II) ion, Cu2+
potassium ion, K+
calcium ion, Ca2+
A sample of a salt was dissolved in hydrochloric acid. A platinum wire was dipped into the solution and then placed in a roaring bunsen flame. A blue flame colour was produced. From this 'flame test' observation, what was the identity of the metal ion in the salt? [id-22]
sodium ion, Na+
copper(II) ion, Cu2+
potassium ion, K+
calcium ion, Ca2+
A sample of a salt was dissolved in hydrochloric acid. A platinum wire was dipped into the solution and then placed in a roaring bunsen flame. A lilac/violet flame colour was produced. From this 'flame test' observation, what was the identity of the metal ion in the salt? [id-23]
sodium ion, Na+
copper(II) ion, Cu2+
potassium ion, K+
calcium ion, Ca2+
A sample of a salt was dissolved in hydrochloric acid. A platinum wire was dipped into the solution and then placed in a roaring bunsen flame. A brick red flame colour was produced. From this 'flame test' observation, what was the identity of the metal ion in the salt? [id-24]
sodium ion, Na+
copper(II) ion, Cu2+
potassium ion, K+
calcium ion, Ca2+
A white solid X dissolved in dilute hydrochloric. A colourless gas evolved which turned limewater milky. When a drop of the solution, on the end of a platium wire, a bright yellow flame colour was observed when the platinum wirewas placed in a roaring bunsen flame. From these observations deduce the identity of substance X. [id-25]
sodium carbonate, Na2CO3
potassium sulfite, K2SO3
calcium carbonate, CaCO3
sodium sulfate, Na2SO4
A blue solid X was dissolved in water and the solution divided into two portions. When a few drops of sodium hydroxide was added to the 1st portion, a blue gelatinous precipitate formed. When a few drops of dilute nitric acid, followed by a few drops of barium nitrate solution was added to the 2nd portion, a white precipitate formed. From these observations deduce the identity of substance X. [id-26]
calcium
sulfate, CaSO4
copper(II)
sulfate, CuSO4
potassim chloride, KCl
copper(II) chloride, CuCl2
Colourless crystals of substance X were dissolved in water and a few drops of dil. nitric acid, followed by a few drops of silver nitrate solution were added, and a white precipitate formed. A few crystals of X were mixed with a few drops of conc. hydrochloriic acid. When a platinum wire was dipped in this mixture, and then placed in a roaring bunsen flame, a red flame colour was seen. From these observations deduce the identity of substance X. [id-27]
potassium
sulfate, K2SO4
copper(II) chloride, CuCl2
calcium chloride, CaCl2
sodium sulfate, Na2SO4
Colourless crystals of substance X were dissolved in water and a few drops of dil. nitric acid, followed by a few drops of silver nitrate solution were added, and a yellow precipitate formed. A few crystals of X were mixed with a few drops of conc. hydrochloric acid. When a platinum wire was dipped in this mixture, and then placed in a roaring bunsen flame, a purple-lilac flame colour was seen. From these observations deduce the identity of substance X. [id-28]
lead(II) iodide, PbI2
potassium
sulfate, K2SO4
copper(II) chloride, CuCl2
potassium iodide, KI
To a colourless solution X, a few drops of dil. nitric acid, followed by a few drops of silver nitrate solution were added, and a white precipitate formed. When a few drops of litmus solution were added to solution X, the solution turned red. There was no characteristic flame colour when a drop of X on the end of a platinum wire, was placed in a roaring bunsen flame. From these observations deduce the identity of solution X. [id-29]
hydrochloric acid, HCl
sulfuric acid, H2SO4
sodium hydroxide, NaOH
calcium hydroxide, Ca(OH)2
To a colourless solution X, a few drops of dil. hydrochloric acid were added, followed by a few drops of barium chloride, and a white precipitate formed. When a few drops of litmus solution were added to solution X, the solution turned red. There was no characteristic flame colour when a drop of X on the end of a platinum wire, was placed in a roaring bunsen flame. From these observations deduce the identity of solution X. [id-30]
hydrochloric acid, HCl
sulfuric acid, H2SO4
sodium hydroxide, NaOH
calcium hydroxide, Ca(OH)2
A colourless solution gave bright yellow flame colour when tested on the end of a platinum wire placed in a roaring bunsen flame. When a few drops of litmus solution were added to solution X, the solution turned blue. From these observations deduce the identity of solution X. [id-31]
hydrochloric acid, HCl
sulfuric acid, H2SO4
sodium hydroxide, NaOH
calcium hydroxide, Ca(OH)2
A colourless solution gave a brick red colour flame when tested on the end of a platinum wire placed in a roaring bunsen flame. When a few drops of litmus solution were added to solution X, the solution turned blue. From these observations deduce the identity of solution X. [id-32]
hydrochloric acid, HCl
sulfuric acid, H2SO4
sodium hydroxide, NaOH
calcium hydroxide, Ca(OH)2
Which of the following is an alkane? [eo-1]
Which of the following is a carboxylic acid? [eo-2]
Which of the following is an alkene? [eo-3]
Which of the following is an ester? [eo-4]
Which of the following is an alcohol? [eo-5]
Which of the following is called propane? [eo-6]
Which of the following is called propanoic acid? [eo-7]
Which of the following is called propene? [eo-8]
Which of the following is called methyl ethanoate? [eo-9]
Which of the following is called propan-1-ol? [eo-10]
Which of the following is a hydrocarbon fuel that does not readily react with bromine? [eo-11]
Which of the following 'fizzes' with a carbonate and forms an ester with alcohols? [eo-12]
Which of the following readily reacts with bromine to produce a colourless product? [eo-13]
Which of the following is a pleasant smelling liquid of a type of molecule used in perfumes and flavourings? [eo-14]
Which of the following is a molecule that reacts with organic acids to form pleasant smelling esters? [eo-15]
Which of the following is an 'ESTERIFICATION' type of reaction? [eo-16]
CH3COOH + C2H5OH ==> CH3COOC2H5 + H2O
C2H5OH + 3O2 ==> 2CO2 + 3H2O
C3H8 + 5O2 ==> 3CO2 + 4H2O
n CH2=CH2 ==> (-CH2-CH2-)n
n HO-XXX-OH ==> (-O-XXX-)n + nH2O
C6H12O6 ==> 2C2H5OH + 2CO2
CH3COOH + NaOH ==> CH3COONa + H2O
C6H14 => C2H4 + C4H10
6CO2 + 6H2O ==> C6H12O6 + 6O2
C6H12O6 + 6O2 ==> 6CO2 + 6H2O
Which of the following is an 'ALCOHOL COMBUSTION' type of reaction? [eo-17]
CH3COOH + C2H5OH ==> CH3COOC2H5 + H2O
C2H5OH + 3O2 ==> 2CO2 + 3H2O
C3H8 + 5O2 ==> 3CO2 + 4H2O
n CH2=CH2 ==> (-CH2-CH2-)n
n HO-XXX-OH ==> (-O-XXX-)n + nH2O
C6H12O6 ==> 2C2H5OH + 2CO2
CH3COOH + NaOH ==> CH3COONa + H2O
C6H14 => C2H4 + C4H10
6CO2 + 6H2O ==> C6H12O6 + 6O2
C6H12O6 + 6O2 ==> 6CO2 + 6H2O
Which of the following is a 'HYDROCARBON COMBUSTION' type of reaction? [eo-18]
CH3COOH + C2H5OH ==> CH3COOC2H5 + H2O
C2H5OH + 3O2 ==> 2CO2 + 3H2O
C3H8 + 5O2 ==> 3CO2 + 4H2O
n CH2=CH2 ==> (-CH2-CH2-)n
n HO-XXX-OH ==> (-O-XXX-)n + nH2O
C6H12O6 ==> 2C2H5OH + 2CO2
CH3COOH + NaOH ==> CH3COONa + H2O
C6H14 => C2H4 + C4H10
6CO2 + 6H2O ==> C6H12O6 + 6O2
C6H12O6 + 6O2 ==> 6CO2 + 6H2O
Which of the following is a 'ADDITION POLYMERISATION' type of reaction? [eo-19]
CH3COOH + C2H5OH ==> CH3COOC2H5 + H2O
C2H5OH + 3O2 ==> 2CO2 + 3H2O
C3H8 + 5O2 ==> 3CO2 + 4H2O
n CH2=CH2 ==> (-CH2-CH2-)n
n HO-XXX-OH ==> (-O-XXX-)n + nH2O
C6H12O6 ==> 2C2H5OH + 2CO2
CH3COOH + NaOH ==> CH3COONa + H2O
C6H14 => C2H4 + C4H10
6CO2 + 6H2O ==> C6H12O6 + 6O2
C6H12O6 + 6O2 ==> 6CO2 + 6H2O
Which of the following is a 'CONDENSATION POLYMERISATION' type of reaction? [eo-20]
CH3COOH + C2H5OH ==> CH3COOC2H5 + H2O
C2H5OH + 3O2 ==> 2CO2 + 3H2O
C3H8 + 5O2 ==> 3CO2 + 4H2O
n CH2=CH2 ==> (-CH2-CH2-)n
n HO-XXX-OH ==> (-O-XXX-)n + nH2O
C6H12O6 ==> 2C2H5OH + 2CO2
CH3COOH + NaOH ==> CH3COONa + H2O
C6H14 => C2H4 + C4H10
6CO2 + 6H2O ==> C6H12O6 + 6O2
C6H12O6 + 6O2 ==> 6CO2 + 6H2O
Which of the following is a 'FERMENTATION' type of reaction? [eo-21]
CH3COOH + C2H5OH ==> CH3COOC2H5 + H2O
C2H5OH + 3O2 ==> 2CO2 + 3H2O
C3H8 + 5O2 ==> 3CO2 + 4H2O
n CH2=CH2 ==> (-CH2-CH2-)n
n HO-XXX-OH ==> (-O-XXX-)n + nH2O
C6H12O6 ==> 2C2H5OH + 2CO2
CH3COOH + NaOH ==> CH3COONa + H2O
C6H14 => C2H4 + C4H10
6CO2 + 6H2O ==> C6H12O6 + 6O2
C6H12O6 + 6O2 ==> 6CO2 + 6H2O
Which of the following is a 'NEUTRALISATION' type of reaction? [eo-22]
CH3COOH + C2H5OH ==> CH3COOC2H5 + H2O
C2H5OH + 3O2 ==> 2CO2 + 3H2O
C3H8 + 5O2 ==> 3CO2 + 4H2O
n CH2=CH2 ==> (-CH2-CH2-)n
n HO-XXX-OH ==> (-O-XXX-)n + nH2O
C6H12O6 ==> 2C2H5OH + 2CO2
CH3COOH + NaOH ==> CH3COONa + H2O
C6H14 => C2H4 + C4H10
6CO2 + 6H2O ==> C6H12O6 + 6O2
C6H12O6 + 6O2 ==> 6CO2 + 6H2O
Which of the following is a 'CRACKING' type of reaction? [eo-23]
CH3COOH + C2H5OH ==> CH3COOC2H5 + H2O
C2H5OH + 3O2 ==> 2CO2 + 3H2O
C3H8 + 5O2 ==> 3CO2 + 4H2O
n CH2=CH2 ==> (-CH2-CH2-)n
n HO-XXX-OH ==> (-O-XXX-)n + nH2O
C6H12O6 ==> 2C2H5OH + 2CO2
CH3COOH + NaOH ==> CH3COONa + H2O
C6H14 => C2H4 + C4H10
6CO2 + 6H2O ==> C6H12O6 + 6O2
C6H12O6 + 6O2 ==> 6CO2 + 6H2O
Which of the following represents 'PHOTOSYNTHESIS'? [eo-24]
CH3COOH + C2H5OH ==> CH3COOC2H5 + H2O
C2H5OH + 3O2 ==> 2CO2 + 3H2O
C3H8 + 5O2 ==> 3CO2 + 4H2O
n CH2=CH2 ==> (-CH2-CH2-)n
n HO-XXX-OH ==> (-O-XXX-)n + nH2O
C6H12O6 ==> 2C2H5OH + 2CO2
CH3COOH + NaOH ==> CH3COONa + H2O
C6H14 => C2H4 + C4H10
6CO2 + 6H2O ==> C6H12O6 + 6O2
C6H12O6 + 6O2 ==> 6CO2 + 6H2O
Which of the following represents 'RESPIRATION'? [eo-25]
CH3COOH + C2H5OH ==> CH3COOC2H5 + H2O
C2H5OH + 3O2 ==> 2CO2 + 3H2O
C3H8 + 5O2 ==> 3CO2 + 4H2O
n CH2=CH2 ==> (-CH2-CH2-)n
n HO-XXX-OH ==> (-O-XXX-)n + nH2O
C6H12O6 ==> 2C2H5OH + 2CO2
CH3COOH + NaOH ==> CH3COONa + H2O
C6H14 => C2H4 + C4H10
6CO2 + 6H2O ==> C6H12O6 + 6O2
C6H12O6 + 6O2 ==> 6CO2 + 6H2O
Which of the following is an 'ESTERIFICATION' type of reaction? [eo-26]
ethanoic acid + ethanol ==> ethyl ethanoate + water
ethanol + oxygen ==> carbon dioxide + water
propane + oxygen ==> carbon dioxide + water
ethene ==> poly(ethene)
glucose ==> starch + water
glucose ==> ethanol + carbon dioxide
ethanoic acid + sodium hydroxide ==> sodium ethanoate + water
hexane ==> ethene + butane
carbon dioxide + water ==> glucose + oxygen
glucose + oxygen ==> carbon dioxide + water
Which of the following is an 'ALCOHOL COMBUSTION' type of reaction? [eo-27]
ethanoic acid + ethanol ==> ethyl ethanoate + water
ethanol + oxygen ==> carbon dioxide + water
propane + oxygen ==> carbon dioxide + water
ethene ==> poly(ethene)
glucose ==> starch + water
glucose ==> ethanol + carbon dioxide
ethanoic acid + sodium hydroxide ==> sodium ethanoate + water
hexane ==> ethene + butane
carbon dioxide + water ==> glucose + oxygen
glucose + oxygen ==> carbon dioxide + water
Which of the following is a 'HYDROCARBON COMBUSTION' type of reaction? [eo-28]
ethanoic acid + ethanol ==> ethyl ethanoate + water
ethanol + oxygen ==> carbon dioxide + water
propane + oxygen ==> carbon dioxide + water
ethene ==> poly(ethene)
glucose ==> starch + water
glucose ==> ethanol + carbon dioxide
ethanoic acid + sodium hydroxide ==> sodium ethanoate + water
hexane ==> ethene + butane
carbon dioxide + water ==> glucose + oxygen
glucose + oxygen ==> carbon dioxide + water
Which of the following is an 'ADDITION POLYMERISATION' type of reaction? [eo-29]
ethanoic acid + ethanol ==> ethyl ethanoate + water
ethanol + oxygen ==> carbon dioxide + water
propane + oxygen ==> carbon dioxide + water
ethene ==> poly(ethene)
glucose ==> starch + water
glucose ==> ethanol + carbon dioxide
ethanoic acid + sodium hydroxide ==> sodium ethanoate + water
hexane ==> ethene + butane
carbon dioxide + water ==> glucose + oxygen
glucose + oxygen ==> carbon dioxide + water
Which of the following is a 'CONDENSATION POLYMERISATION' type of reaction? [eo-30]
ethanoic acid + ethanol ==> ethyl ethanoate + water
ethanol + oxygen ==> carbon dioxide + water
propane + oxygen ==> carbon dioxide + water
ethene ==> poly(ethene)
glucose ==> starch + water
glucose ==> ethanol + carbon dioxide
ethanoic acid + sodium hydroxide ==> sodium ethanoate + water
hexane ==> ethene + butane
carbon dioxide + water ==> glucose + oxygen
glucose + oxygen ==> carbon dioxide + water
Which of the following is a 'FERMENTATION' type of reaction? [eo-31]
ethanoic acid + ethanol ==> ethyl ethanoate + water
ethanol + oxygen ==> carbon dioxide + water
propane + oxygen ==> carbon dioxide + water
ethene ==> poly(ethene)
glucose ==> starch + water
glucose ==> ethanol + carbon dioxide
ethanoic acid + sodium hydroxide ==> sodium ethanoate + water
hexane ==> ethene + butane
carbon dioxide + water ==> glucose + oxygen
glucose + oxygen ==> carbon dioxide + water
Which of the following is a 'NEUTRALISATION' type of reaction? [eo-32]
ethanoic acid + ethanol ==> ethyl ethanoate + water
ethanol + oxygen ==> carbon dioxide + water
propane + oxygen ==> carbon dioxide + water
ethene ==> poly(ethene)
glucose ==> starch + water
glucose ==> ethanol + carbon dioxide
ethanoic acid + sodium hydroxide ==> sodium ethanoate + water
hexane ==> ethene + butane
carbon dioxide + water ==> glucose + oxygen
glucose + oxygen ==> carbon dioxide + water
Which of the following is a 'CRACKING' type of reaction? [eo-33]
ethanoic acid + ethanol ==> ethyl ethanoate + water
ethanol + oxygen ==> carbon dioxide + water
propane + oxygen ==> carbon dioxide + water
ethene ==> poly(ethene)
glucose ==> starch + water
glucose ==> ethanol + carbon dioxide
ethanoic acid + sodium hydroxide ==> sodium ethanoate + water
hexane ==> ethene + butane
carbon dioxide + water ==> glucose + oxygen
glucose + oxygen ==> carbon dioxide + water
Which of the following represents 'PHOTOSYNTHESIS'? [eo-34]
ethanoic acid + ethanol ==> ethyl ethanoate + water
ethanol + oxygen ==> carbon dioxide + water
propane + oxygen ==> carbon dioxide + water
ethene ==> poly(ethene)
glucose ==> starch + water
glucose ==> ethanol + carbon dioxide
ethanoic acid + sodium hydroxide ==> sodium ethanoate + water
hexane ==> ethene + butane
carbon dioxide + water ==> glucose + oxygen
glucose + oxygen ==> carbon dioxide + water
Which of the following represents 'RESPIRATION' reaction? [eo-35]
ethanoic acid + ethanol ==> ethyl ethanoate + water
ethanol + oxygen ==> carbon dioxide + water
propane + oxygen ==> carbon dioxide + water
ethene ==> poly(ethene)
glucose ==> starch + water
glucose ==> ethanol + carbon dioxide
ethanoic acid + sodium hydroxide ==> sodium ethanoate + water
hexane ==> ethene + butane
carbon dioxide + water ==> glucose + oxygen
glucose + oxygen ==> carbon dioxide + water
Which of the following chemical reagents and reaction conditions is used in the laboratory to convert 'ethanol to ethanoic acid'? [eo-36]
acidified potassium dichromate(VI)
steam and phosphoric(V) acid catalyst
heating with aqueous sodium hydroxide
hydrogen gas and nickel catalyst
Which of the following chemical reagents and reaction conditions is used in industry to convert 'ethene to ethanol'? [eo-37]
acidified potassium dichromate(VI)
steam and phosphoric(V) acid catalyst
heating with aqueous sodium hydroxide
hydrogen gas and nickel catalyst
Which of the following chemical reagents and reaction conditions is used in the laboratory or industry to convert 'natural vegetable oils to soap'? [eo-38]
acidified potassium dichromate(VI)
steam and phosphoric(V) acid catalyst
heating with aqueous sodium hydroxide
hydrogen gas and nickel catalyst
Which of the following chemical reagents and reaction conditions is used in industry to convert 'vegetable oils to margarine'? [eo-39]
acidified potassium dichromate(VI)
steam and phosphoric(V) acid catalyst
heating with aqueous sodium hydroxide
hydrogen gas and nickel catalyst
Which of the following chemical reagents and reaction conditions is used in to 'breakdown protein into amino acids'? [eo-40]
acidified potassium dichromate(VI)
steam and phosphoric(V) acid catalyst
hydrogen gas and nickel catalyst
heating with hydrochloric acid
Which of the following chemical reagents and reaction conditions is used in to 'breakdown starch into glucose'? [eo-41]
acidified potassium dichromate(VI)
steam and phosphoric(V) acid catalyst
hydrogen gas and nickel catalyst
heating with hydrochloric acid
Which of the following molecular pictures corresponds to a 'typical thermoplastic' used for making bottles? [eo-42]
picture 1
picture 2
picture 3
Which of the following molecular pictures corresponds to a 'thermoplastic fibre'? [eo-43]
picture 1
picture 2
picture 3
Which of the following molecular pictures corresponds to a 'hard thermoset plastic'? [eo-44]
picture 1
picture 2
picture 3
Which of the following molecular pictures corresponds to unprocessed 'thermosoftening plastic'? [eo-45]
picture 1
picture 2
picture 3
Which of the following molecular pictures corresponds to 'Nylon or Terylene used in clothing'? [eo-46]
picture 1
picture 2
picture 3
Which of the following molecular pictures corresponds to the 'plastic set in a fibre glass car body'? [eo-47]
picture 1
picture 2
picture 3
Which of the following separation methods of would be used to 'separate amino acids from hydrolysed protein? [eo-48]
chromatography
fractional distillation
filtration
crystallisation
Which of the following separation methods of would be used to 'obtain much purer ethanol/alcohol from fermented sugar solution? [eo-49]
chromatography
fractional distillation
filtration
crystallisation
Which of the following separation methods of would be used to 'remove yeast from fermented sugar solution? [eo-50]
chromatography
fractional distillation
filtration
crystallisation
Which of the following separation methods of would be used to 'obtain a purer sample of aspirin powder from a chemical preparation of it? [eo-51]
chromatography
fractional distillation
filtration
crystallisation
The diagrams above show the molecular structure of three common synthetic pain killers (analgesics) and the naturally occuring vitamin C (ascorbic acid) found in fruit and vegetables. Which of them is most likely to readily react with bromine? [eo-52]
ascorbic acid (vitamin C)
aspirin
ibuprofen
paracetamol
The diagrams above show the molecular structure of three common synthetic pain killers (analgesics) and the naturally occuring vitamin C (ascorbic acid) found in fruit and vegetables. Which of them is both a carboxylic acid and an ester? [eo-53]
ascorbic acid (vitamin C)
aspirin
ibuprofen
paracetamol
The diagrams above show the molecular structure of three common synthetic pain killers (analgesics) and the naturally occuring vitamin C (ascorbic acid) found in fruit and vegetables. Which of them is not an ester, but is a carboxylic acid? [eo-54]
ascorbic acid (vitamin C)
aspirin
ibuprofen
paracetamol
The diagrams above show the molecular structure of three common synthetic pain killers (analgesics) and the naturally occuring vitamin C (ascorbic acid) found in fruit and vegetables. Which of the molecules contains one element the other three do not have in their structure? [eo-55]
ascorbic acid (vitamin C)
aspirin
ibuprofen
paracetamol
The diagrams above show the molecular structure of three common synthetic pain killers (analgesics) and the naturally occuring vitamin C (ascorbic acid) found in fruit and vegetables. Which of them has the formula C6H8O6? [eo-56]
ascorbic acid (vitamin C)
aspirin
ibuprofen
paracetamol
The diagrams above show the molecular structure of three common synthetic pain killers (analgesics) and the naturally occuring vitamin C (ascorbic acid) found in fruit and vegetables. Which of them has the formula C9H8O4? [eo-57]
ascorbic acid (vitamin C)
aspirin
ibuprofen
paracetamol
The diagrams above show the molecular structure of three common synthetic pain killers (analgesics) and the naturally occuring vitamin C (ascorbic acid) found in fruit and vegetables. Which of them has the formula C13H18O2? [eo-58]
ascorbic acid (vitamin C)
aspirin
ibuprofen
paracetamol
The diagrams above show the molecular structure of three common synthetic pain killers (analgesics) and the naturally occuring vitamin C (ascorbic acid) found in fruit and vegetables. Which of them has the formula C8H9NO2? [eo-59]
ascorbic acid (vitamin C)
aspirin
ibuprofen
paracetamol
The diagrams above show the molecular structure of three common synthetic pain killers (analgesics) and the naturally occuring vitamin C (ascorbic acid) found in fruit and vegetables. Which of them can form an ester with a carboxylic acid and readily form a dibromo compound with bromine? [eo-60]
ascorbic acid (vitamin C)
aspirin
ibuprofen
paracetamol
The diagrams above show the molecular structure of three common synthetic pain killers (analgesics) and the naturally occuring vitamin C (ascorbic acid) found in fruit and vegetables. Which of them is an ester and can still form an ester with an alcohol? [eo-61]
ascorbic acid (vitamin C)
aspirin
ibuprofen
paracetamol
The diagrams above show the molecular structure of three common synthetic pain killers (analgesics) and the naturally occuring vitamin C (ascorbic acid) found in fruit and vegetables. Which of them is not an ester, but can form an ester with an alcohol and will not readily react with bromine? [eo-62]
ascorbic acid (vitamin C)
aspirin
ibuprofen
paracetamol
The diagrams above show the molecular structure of three common synthetic pain killers (analgesics) and the naturally occuring vitamin C (ascorbic acid) found in fruit and vegetables. Which of them is not an ester or a carboxylic acid or an alcohol? [eo-63]
ascorbic acid (vitamin C)
aspirin
ibuprofen
paracetamol
Which of the following general formula represents the homologous series of alkanes? [eo-6]
CnH2n+2 where n = 1, 2, 3, ...
CnH2n where n = 2, 3, 4, ...
CnH2n+1OH where n = 1, 2, 3, ...
CnH2n+1COOH where n = 0, 1, 2, ...
Which of the following general formula represents the homologous series of alkenes? [eo-65]
CnH2n+2 where n = 1, 2, 3, ...
CnH2n where n = 2, 3, 4, ...
CnH2n+1OH where n = 1, 2, 3, ...
CnH2n+1COOH where n = 0, 1, 2, ...
Which of the following general formula represents the homologous series of alcohols? [eo-66]
CnH2n+2 where n = 1, 2, 3, ...
CnH2n where n = 2, 3, 4, ...
CnH2n+1OH where n = 1, 2, 3, ...
CnH2n+1COOH where n = 0, 1, 2, ...
Which of the following general formula represents the homologous series of carboxylic acids? [eo-67]
CnH2n+2 where n = 1, 2, 3, ...
CnH2n where n = 2, 3, 4, ...
CnH2n+1OH where n = 1, 2, 3, ...
CnH2n+1COOH where n = 0, 1, 2, ...
The diagrams above show the molecular structure of three common synthetic pain killers (analgesics) and the naturally occuring vitamin C (ascorbic acid) found in fruit and vegetables. Which of them is good at removing harmful free radicals in the body? [eo-68]
ascorbic acid (vitamin C)
aspirin
ibuprofen
paracetamol
The diagrams above show the molecular structure of three common synthetic pain killers (analgesics) and the naturally occuring vitamin C (ascorbic acid) found in fruit and vegetables. Which of them does NOT produce fizzing when mixed with water and a carbonate? [eo-69]
ascorbic acid (vitamin C)
aspirin
ibuprofen
paracetamol
Which word corresponds to a hydrocarbon molecule? [op-13]
compound
element
fraction
mixture
Which word corresponds to carbon? [op-14]
compound
element
fraction
mixture
Which word corresponds to a narrow boiling range of hydrocarbons from oil? [op-15]
compound
element
fraction
condensate
Which word corresponds to crude oil? [op-16]
compound
element
fraction
mixture
Which word corresponds to methane gas? [op-17]
compound
element
fraction
mixture
Which word corresponds to hydrogen? [op-18]
compound
element
fraction
mixture
Which word corresponds to a range of similar sized hydrocarbons from oil? [op-19]
compound
element
fraction
crackate
Which word corresponds to a fraction of crude oil? [op-20]
compound
element
evaporate
mixture
Which word means changing a gas into liquid? [op-21]
condensing
cracking
distilling
evaporating
Which word means breaking up big molecules into small ones? [op-22]
condensing
cracking
distilling
evaporating
Which of the following involves liquid to gas AND gas to liquid without chemical change? [op-23]
condensing
cracking
distilling
evaporating
Which word means what happens to spilt petrol? [op-24]
condensing
cracking
distilling
evaporating
Which of the following is TRUE about crude oil? [op-45]
formed from the decayed remains of plants and animals
its a renewable energy resource
its an infinite energy resource
its a compound
Which of the following is TRUE about crude oil? [op-46]
formed from the erosion of sedimentary rock
its a non-renewable energy resource
its an infinite energy resource
its a compound
Which of the following is TRUE about crude oil? [op-47]
formed from the erosion of sedimentary rock
its a renewable energy resource
its a finite energy resource
its a compound
Which of the following is TRUE about crude oil? [op-48]
formed from the erosion of sedimentary rock
its a renewable energy resource
its an infinite energy resource
its a mixture of hydrocarbons
Which of the following is TRUE about crude oil? [op-49]
the mixture can separated by distillation
its a non-fossil fuel
the molecules are all the same size
the components have the same boiling point
Which of the following is TRUE about crude oil? [op-50]
the mixture can't be separated by distillation
its a fossil fuel
the molecules are all the same size
the components have the same boiling point
Which of the following is TRUE about crude oil? [op-51]
the mixture can't be separated by distillation
its a non-fossil fuel
the molecules are of different size
the components have the same boiling point
Which of the following is TRUE about crude oil? [op-52]
the mixture can't be separated by distillation
its a non-fossil fuel
the molecules are the same size
the components have the different boiling points
Which is TRUE as a hydrocarbon molecule gets bigger (more carbon atoms in chain)? [op-53]
the boiling point gets higher
it gets more volatile (more easily vaporised)
it gets less viscous (less sticky)
it gets more easy to ignite (gets more flammable)
Which is TRUE as a hydrocarbon molecule gets bigger (more carbon atoms in chain)? [op-54]
the boiling point gets lower
it gets less volatile (less easily vaporised)
it gets less viscous (less sticky)
it gets more easy to ignite (gets more flammable)
Which is TRUE as a hydrocarbon molecule gets bigger (more carbon atoms in chain)? [op-55]
the boiling point gets lower
it gets more volatile (more easily vaporised)
it gets more viscous (more sticky)
it gets more easy to ignite (gets more flammable)
Which is TRUE as a hydrocarbon molecule gets bigger (more carbon atoms in chain)? [op-56]
the boiling point gets lower
it gets more volatile (more easily vaporised)
it gets less viscous (less sticky)
it gets less easy to ignite (gets less flammable)
Cracking is an example of? [op-57]
thermal decomposition
polymerisation
fractional distillation
combustion
Making plastics is an example of? [op-58]
thermal decomposition
polymerisation
fractional distillation
combustion
The separation of crude oil products is an example of? [op-59]
thermal decomposition
polymerisation
fractional distillation
combustion
Burning a fuel is an example of? [op-60]
thermal decomposition
polymerisation
fractional distillation
combustion
Which TRUE about the process of 'cracking' in the petrochemical oil industry? [op-61]
it needs a high temperature
it doesn't need a catalyst
it makes small molecules into more useful bigger molecules
it can make plastics
Which TRUE about the process of 'cracking' in the petrochemical oil industry? [op-62]
it needs a low temperature
it needs a catalyst
it makes small molecules into more useful bigger molecules
it can make plastics
Which TRUE about the process of 'cracking' in the petrochemical oil industry? [op-63]
it needs a low temperature
it doesn't need a catalyst
it makes big molecules into more useful smaller molecules like petrol
it can make plastics
Which TRUE about the process of 'cracking' in the petrochemical oil industry? [op-64]
it needs a low temperature
it doesn't need a catalyst
it makes small molecules into more useful bigger molecules like petrol
it can make small molecules to convert into plastics
Which corresponds to a process that has been occuring over a very long period of geological time? [op-65]
process J
process N
process K
process M
Which corresponds to a process of combustion? [op-66]
process J
process N
process K
process M
Which corresponds to a process of fractional distillation? [op-67]
process J
process N
process K
process M
Which corresponds to a process of polymerisation? [op-68]
process L
process N
process K
process M
Which corresponds to a process of cracking? [op-69]
process L
process Q
process K
process M
Which corresponds to a very slow process, sometimes described as 'non-biodegradable'? [op-70]
process L
process Q
process N
process M
Which corresponds to the cause of the 'greenhouse effect'? [op-71]
process L
process Q
process N
process M
Which corresponds to changing bigger molecules into smaller molecules with heat and a catalyst? [op-72]
process K
process Q
process N
process L
Which corresponds to changing small molecules into big molecules? [op-73]
process M
process Q
process N
process K
Which corresponds to a process that works because different hydrocarbons in oil having different boiling points? [op-74]
process L
process K
process N
process M
Which corresponds to a process that causes acid rain? [op-75]
process Q
process K
process N
process M
Which corresponds to the process that makes extra petrol that wasn't originally in the crude oil? [op-76]
process M
process K
process N
process L
Which is a chemical test for the gas hydrogen? [op-77]
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? [op-78]
pops with a lit splint
turns limewater cloudy
relights a glowing splint
bleaches damp litmus paper
Which is a chemical test for water? [op-79]
turns orange potassium dichromate paper green
turns universal indicator orange
turns blue cobalt chloride paper pink
turns litmus paper green
Which is a chemical test for water? [op-80]
turns orange potassium dichromate paper green
turns universal indicator turquoise
turns litmus paper green
turns white copper
sulfate blue
Which of the following, when fossil fuels are burned, causes acid rain? [op-81]
sulfur dioxide
carbon dioxide
carbon (soot)
carbon monoxide
Which of the following, when fossil fuels are burned causes the 'greenhouse effect'? [op-82]
sulfur dioxide
carbon dioxide
carbon (soot)
carbon monoxide
Which of the following, when fossil fuels are burned, is formed when there is lack of oxygen? [op-83]
sulfur dioxide
carbon dioxide
carbon (soot)
nitrogen dioxide
Which of the following, when fossil fuels are burned, is formed when there is lack of oxygen? [op-84]
sulfur dioxide
carbon dioxide
nitrogen dioxide
carbon monoxide
At 1 the crude oil is a ..?.. of hydrocarbons. [op-85]
mixture
volatiles
compounds
viscous
At 2 the hydrocarbons are? [op-86]
big molecules
volatile
not very flammable
viscous
At 1-4 the hydrocarbons are a ..?.. of hydrogen and carbon. [op-87]
atom
mixture
compound
fraction
At 4 the hydrocarbons are very? [op-88]
volatile
runny
flammable
viscous
At 1 the hydrocarbon mixture is? [op-89]
dark in colour
very flammable
like diesel
very runny
At 2 the hydrocarbon mixture is? [op-90]
dark in colour
very flammable
like diesel
viscous
At 3 the hydrocarbon mixture is? [op-91]
very dark in colour
very flammable
like diesel
very viscous
At 4 the hydrocarbon mixture is? [op-92]
very light in colour
very flammable
like diesel
not very flammable
... Substance X is a hydrocarbon with a low boiling point. ... Substance Y is a hydrocarbon with a high boiling point. Which statement is TRUE about the hydrocarbons X and Y? [op-93]
X has smallermolecules than Y
X is less flammable than Y
X is less volatile than Y
X has more carbon atoms than Y
Substance X is a hydrocarbon with a low boiling point. Substance Y is a hydrocarbon with a high boiling point. Which statement is TRUE about the hydrocarbons X and Y? [op-94]
X has larger molecules than Y
X is more flammable than Y
X is less volatile than Y
X has more carbon atoms than Y
Substance X is a hydrocarbon with a low boiling point. Substance Y is a hydrocarbon with a high boiling point. Which statement is TRUE about the hydrocarbons X and Y? [op-95]
X has larger molecules than Y
X is less flammable than Y
X is more volatile than Y
X has more carbon atoms than Y
Substance X is a hydrocarbon with a low boiling point. Substance Y is a hydrocarbon with a high boiling point. Which statement is TRUE about the hydrocarbons X and Y? [op-96]
X has larger molecules than Y
X is less flammable than Y
X is less volatile than Y
X has fewer carbon atoms than Y
Substance X is a hydrocarbon with a low boiling point. Substance Y is a hydrocarbon with a high boiling point. Which statement is TRUE about the hydrocarbons X and Y? [op-97]
X is less viscous than Y
X is less flammable than Y
X is less volatile than Y
X has more carbon atoms than Y
The main waste products of the combustion of a hydrocarbon fuel are? [op-98]
carbon and water
carbon dioxide and water
carbon dioxide and hydrogen
carbon monoxide and water
The 'clean' or complete combustion of methane (natural gas) produces? [op-99]
carbon dioxide and hydrogen
carbon and water
carbon dioxide and water
carbon monoxide and water
The combustion of hydrogen produces? [op-100]
carbon dioxide only
carbon and water
carbon dioxide and water
only water
Which is a suitable physical test for a liquid thought to be pure water by seeing if it? [op-119]
boils at a particular temperature
mixes with oil
dissolves salt
freezes
Which is a definition of an atom? [op-120]
the smallest particles of matter that make up substances
collection of substances which keep their own properties and easily separated
two or more atoms joined together to make a bigger particle
two or more elements chemically joined together and not easily separated
Which is a definition of a mixture? [op-121]
the smallest particles of matter that make up substances
collection of substances which keep their own properties and easily separated
two or more atoms joined together to make a bigger particle
two or more elements chemically joined together and not easily separated
Which is a definition of a molecule? [op-122]
the smallest particles of matter that make up substances
collection of substances which keep their own properties and easily separated
two or more atoms joined together to make a bigger particle
two or more elements chemically joined together and not easily separated
Which is a definition of a compound? [op-123]
the smallest particles of matter that make up substances
collection of substances which keep their own properties and easily separated
two or more atoms joined together to make a bigger particle
two or more elements chemically joined together and not easily separated
Which of the following means a 'hydrocarbon'? [op-124]
a mixture of carbon and hydrogen atoms
a molecule made of carbon and hydrogen atoms chemically combined
a mixture of carbon and hydrogen molecules
a molecule made from reacting carbon and water
Which statement is TRUE about polymers (plastics)? [op-125]
poly(ethene) is readily broken down by microorganisms
poly(propene) is not easily shaped when softened by heat
poly(ethene) is used for plastic bags
poly(propene) is not strong enough to make into ropes
Which statement is TRUE about polymers (plastics)? [op-126]
poly(ethene) is readily broken down by microorganisms
poly(propene) is not easily shaped when softened by heat
poly(ethene) is too expensive to use for plastic bags
poly(propene) is strong enough to make into ropes
Which statement is TRUE about polymers (plastics)? [op-127]
poly(ethene) is not readily broken down by microorganisms
poly(propene) is not easily shaped when softened by heat
poly(ethene) is too expensive to use for plastic bags and bottles
poly(propene) is not strong enough to make into ropes
Which statement is TRUE about polymers (plastics)? [op-128]
poly(ethene) is readily broken down by microorganisms
poly(propene) is easily shaped when softened by heat
poly(ethene) is too expensive to use for bottles
poly(propene) is too weak to make into ropes
Which statement is TRUE about polymers (plastics)? [op-129]
poly(ethene) is readily broken down by microorganisms
poly(propene) is not easily shaped when softened by heat
poly(ethene) is cheap to use for plastic bottles
poly(propene) is too weak to make into ropes
Which statement is TRUE about polymers (plastics)? [op-130]
poly(ethene) is readily broken down by microorganisms
poly(propene) is not easily shaped when softened by heat
poly(ethene) is too expensive to use for plastic bottles
poly(propene) is strong enough to make into crates
Which statement is TRUE about polymers (plastics)? [op-131]
poly(propene) is not biodegradable
poly(propene) is not easily shaped when softened by heat
poly(ethene) is too expensive to use for plastic bottles
poly(propene) is not strong enough to make into crates
Which statement is TRUE about polymers (plastics)? [op-132]
poly(propene) is biodegradable
poly(ethene) is easily shaped when softened by heat
poly(ethene) is too expensive to use for plastic bottles
poly(propene) is not strong enough to make into crates
Which explains why the gasoline fraction is used for petrol? [op-133]
not too flammable and not too viscous
quite viscous but will not freeze or evaporate easily
a liquid that is easily vapourised and not too viscous
can be liquified under pressure but easily changes back to a gas
Which explains why the refinery gas fraction is used for 'camping gaz' burners? [op-134]
not too flammable and not too viscous
quite viscous but will not freeze or evaporate easily
a liquid that is easily vapourised and not too viscous
can be liquified under pressure but easily changes back to a gas
Which explains why the fuel oil fraction is used for central heating? [op-135]
not too flammable and not too viscous
quite viscous but will not freeze or evaporate easily
a liquid that is easily vapourised and not too viscous
can be liquified under pressure but easily changes back to a gas
Which explains why the lubricating oil fraction is used as a lubricant? [op-136]
not too flammable and not too viscous
quite viscous but will not freeze or evaporate easily
a liquid that is easily vapourised and not too viscous
can be liquified under pressure but easily changes back to a gas
Which represents an addition polymerisation reaction? [op-137]
ethene ==> poly(ethene)
methane + oxygen ==> carbon dioxide + water
hexane ==> butane + ethene
ethene + bromine ==> dibromoethane
Which represents a combustion reaction? [op-138]
ethene ==> poly(ethene)
methane + oxygen ==> carbon dioxide + water
hexane ==> butane + ethene
ethene + bromine ==> dibromoethane
Which represents a cracking reaction? [op-139]
ethene ==> poly(ethene)
methane + oxygen ==> carbon dioxide + water
hexane ==> butane + ethene
ethene + bromine ==> dibromoethane
Which represents a reaction that tests for ethene? [op-140]
ethene ==> poly(ethene)
ethene + oxygen ==> carbon dioxide + water
hexane ==> butane + ethene
ethene + bromine ==> dibromoethane
Below is a list of processes involved in the petrochemical industry. 1. combustion , 2. cracking , 3. drilling , 4. fractional distillation , 5. polymerisation Which is the correct order to produce a plastic? [op-141]
3 2 4 5
2 5 1 4
3 4 2 5
4 2 3 5
Carbon monoxide has the formula CO. It is therefore? [op-142]
an atom
an element
a mixture
a compound
Which is a single compound? [op-143]
methane
carbon
lubricating oil
hydrogen
Which is a solid element? [op-144]
methane
carbon
bitumen tar
wax
Which is a mixture? [op-145]
methane
carbon
product(s) of burning methane
hydrogen
Which is a particularly toxic gas sometimes produced by faulty gas fires? [op-146]
methane
carbon dioxide
nitrogen
carbon monoxide
Which represents a thermal decomposition reaction? [op-147]
ethene ==> poly(ethene)
methane + oxygen ==> carbon dioxide + water
hexane ==> butane + ethene
ethene + bromine ==> dibromoethane
Which is a thermal decompostion reaction in the petrochemical industry? [op-148]
combustion
addition polymerisation
fractional distillation
cracking
What is formed by the complete combustion of wax? [op-161]
water + carbon dioxide
water only
carbon dioxide only
carbon monoxide and water
What may be formed by the incomplete combustion of petrol? [op-162]
water + carbon dioxide
water, carbon dioxide and carbon monoxide
only carbon dioxide
only water
Drips of a colourless liquid were seen at the end of a car exhaust. The colourless liquid is most likely to be? [op-163]
unburned petrol
engine oil
water
partly burned petrol
A samle of gas from a car exhaust was tested with limewater and gave a white precipitate. The gas was most likely to be? [op-164]
carbon monoxide
unburned petrol vapour
partly burned petrol vapour
carbon dioxide
Poly(ethene) and poly(propene) are described as examples of? [op-165]
plastics
fuels
hydrocarbons
crackates
Petrol and diesel are best described as examples of? [op-165]
plastics
fuels
lubricants
crackates
Incomplete combustion can happen when there is a shortage of? [op-167]
carbon dioxide
fuel
oxygen
carbon monoxide
Biodegradable plastics are environmentally friendly because they? [op-168]
are structurally weak
don't produce harmful fumes when burned
are not attacked by fungus
rot away in a land fill site
Which is a hydrocarbon molecule? [op-169]
C2H6
C2H5Br
C2H5OH
CH3COOH
The following 'carbon numbers' correspond to gasoline, bottled gas, bitumen and kerosine. Which is likely to be gasoline? [op-170]
3 carbon atoms
8 carbon atoms
15 carbon atoms
over 40 carbon atoms
The following 'carbon numbers' correspond to gasoline, bottled gas, bitumen and kerosine. Which is likely to be kerosine? [op-171]
3 carbon atoms
8 carbon atoms
15 carbon atoms
over 40 carbon atoms
The following 'carbon numbers' correspond to gasoline, bottled gas, bitumen and kerosine. Which is likely to be bitumen? [op-172]
3 carbon atoms
8 carbon atoms
15 carbon atoms
over 40 carbon atoms
The following 'carbon numbers' correspond to gasoline, bottled gas, bitumen and kerosine. Which is likely to be bottled gas? [op-173]
3 carbon atoms
8 carbon atoms
15 carbon atoms
over 40 carbon atoms
The 'carbon numbers' correspond to molecules with different uses: for road surfacing, petrol engine fuel, camping gas and diesel egine fuel. Which best matches petrol fuel? [op-174]
3 carbon atoms
8 carbon atoms
20 carbon atoms
over 40 carbon atoms
The 'carbon numbers' correspond to molecules with different uses: for road surfacing, petrol engine fuel, camping gas and diesel egine fuel. Which best matches diesel fuel? [op-175]
3 carbon atoms
8 carbon atoms
20 carbon atoms
over 40 carbon atoms
The 'carbon numbers' correspond to molecules with different uses: for road surfacing, petrol engine fuel, camping gas and diesel egine fuel. Which best matches road surfacing material? [op-176]
3 carbon atoms
8 carbon atoms
20 carbon atoms
over 40 carbon atoms
The 'carbon numbers' correspond to molecules with different uses: for road surfacing, petrol engine fuel, camping gas and diesel egine fuel. Which best matches camping gas? [op-177]
3 carbon atoms
8 carbon atoms
20 carbon atoms
over 40 carbon atoms
The following 'carbon numbers' correspond to hydrocarbon molecules with different characteristics. These are: a not very flammable oily liquid, a light flammable liquid, a thick viscous (sticky) liquid, and a flammable gas. Which corresponds to a light flammable liquid? [op-178]
3 carbon atoms
8 carbon atoms
15 carbon atoms
30 carbon atoms
The following 'carbon numbers' correspond to hydrocarbon molecules with different characteristics. These are: a not very flammable oily liquid, a light flammable liquid, a thick viscous (sticky) liquid, and a flammable gas. Which corresponds to a not very flammable liquid? [op-179]
3 carbon atoms
8 carbon atoms
15 carbon atoms
30 carbon atoms
The following 'carbon numbers' correspond to hydrocarbon molecules with different characteristics. These are: a not very flammable oily liquid, a light flammable liquid, a thick viscous (sticky) liquid, and a flammable gas. Which corresponds to a thick viscous liquid? [op-180]
3 carbon atoms
8 carbon atoms
15 carbon atoms
30 carbon atoms
The following 'carbon numbers' correspond to hydrocarbon molecules with different characteristics. These are: a not very flammable oily liquid, a light flammable liquid, a thick viscous (sticky) liquid, and a flammable gas. Which corresponds to a flammable gas? [op-181]
3 carbon atoms
8 carbon atoms
15 carbon atoms
30 carbon atoms
Which is a plastic? [op-182]
petrol
polythene
paraffin
propanol
Which is a plastic? [op-183]
petrol
paraffin
polypropene
propanol
Which is a plastic? [op-184]
PDB
ASE
DDT
PVC
[op-1] Which four quantities a, b, c and d are required to balance the equation? a CH4(g) + b O2(g) ==> c CO2(g) + d H2O(l)
1 2 1 2
1 1 1 2
1 2 2 1
1 1 1 1
[op-2] Which four quantities a, b, c and d are required to balance the equation? a C2H6(g) + b O2(g) ==> c CO2(g) + d H2O(l)
1 2 1 3
2 7 4 6
2 4 4 6
1 7 2 3
[op-3] Which four quantities a, b, c and d are required to balance the equation? a C3H8(g) + b O2(g) ==> c CO2(g) + d H2O(l)
1 3 3 4
2 10 4 6
1 5 3 4
2 5 2 3
[op-4] Which four quantities a, b, c and d are required to balance the equation? a C4H10(g) + b O2(g) ==> c CO2(g) + d H2O(l)
1 13 8 4
2 7 4 10
1 5 3 4
2 13 8 10
[op-5] Which four quantities a, b, c and d are required to balance the equation? a C5H12(l) + b O2(g) ==> c CO2(g) + d H2O(l)
1 8 5 6
1 4 4 6
2 4 5 12
2 8 10 12
[op-6] Which four quantities a, b, c and d are required to balance the equation? a C6H14(g) + b O2(g) ==> c CO2(g) + d H2O(l)
2 9 6 14
2 19 12 14
1 9 6 7
1 10 12 7
[op-7] Which four quantities a, b, c and d are required to balance the equation? a C7H16(l) + b O2(g) ==> c CO2(g) + d H2O(l)
1 5 7 8
2 12 14 16
1 11 7 8
2 11 14 16
[op-8] Which four quantities a, b, c and d are required to balance the equation? a C8H18(g) + b O2(g) ==> c CO2(g) + d H2O(l)
1 13 8 18
1 13 8 9
2 13 16 18
2 25 16 18
[op-9] Which four quantities a, b, c and d are required to balance the equation? a C2H4(g) + b O2(g) ==> c CO2(g) + d H2O(l)
1 3 2 2
1 2 2 2
2 3 4 4
2 6 4 4
[op-10] Which four quantities a, b, c and d are required to balance the equation? a C3H6(g) + b O2(g) ==> c CO2(g) + d H2O(l)
2 5 6 6
2 9 6 6
1 5 3 3
1 9 3 3
[op-11] Which four quantities a, b, c and d are required to balance the equation? a C4H8(g) + b O2(g) ==> c CO2(g) + d H2O(l)
2 12 8 8
2 6 8 8
1 6 4 4
1 3 4 4
[op-12] Which four quantities a, b, c and d are required to balance the equation? a C7H8(g) + b O2(g) ==> c CO2(g) + d H2O(l)
2 9 4 8
2 10 14 8
1 5 7 4
1 9 7 4
Which molecule is natural gas? [op-25]
Which molecule is methane? [op-26]
Which molecule has the lowest boiling point? [op-27]
Which molecule reacts readily reacts and decolourises bromine water at room temperature? [op-28]
Which molecule is unsaturated? [op-29]
Which molecule can be polymerised to a plastic material? [op-30]
Which molecule is an alkene? [op-31]
Which molecule has the highest boiling point? [op-32]
Which molecule readily reacts to decolourise bromine water? [op-33]
<img src="../page12/gifs/extra2.gif"
Which molecule is unsaturated? [op-34]
Which molecule can be polymerised to form a plastic material? [op-35]
Which molecule is an alkene? [op-36]
Which of the molecules is saturated? [op-37]
Which of the molecules is an alkane? [op-38]
Which of the molecules is saturated? [op-39]
Which of the molecules is saturated? [op-40]
Which molecule has the lowest boiling point? [op-41]
Which molecule is most likely to be a liquid? [op-42]
Which molecule is likely to be the most chemically reactive? [op-43]
Which molecule has the highest boiling point? [op-44]
Which is TRUE about an alkane hydrocarbon molecule? [op-101]
it is saturated
it has single and double covalent bonds
it readily reacts with bromine
it can be polymerised to a plastic polymer
Which is TRUE about an alkane hydrocarbon molecule? [op-102]
it is unsaturated
it has single covalent bonds only
it readily reacts with bromine
it can be polymerised to a plastic polymer
Which is TRUE about an alkane hydrocarbon molecule? [op-103]
it is unsaturated
it has single and double covalent bonds
it does not readily react with bromine
it can be polymerised to a plastic polymer
Which is TRUE about an alkane hydrocarbon molecule? [op-104]
it is unsaturated
it has single and double covalent bonds
it readily reacts with bromine
it cannot be polymerised to a plastic polymer
Which is TRUE about an alkene hydrocarbon molecule? [op-105]
it is unsaturated
it has single covalent bonds only
it does not readily react with bromine
it cannot be be polymerised to a plastic polymer
Which is TRUE about an alkene hydrocarbon molecule? [op-106]
it is saturated
it has single and double covalent bonds
it does not readily react with bromine
it cannot be polymerised to a plastic polymer
Which is TRUE about an alkene hydrocarbon molecule? [op-107]
it is saturated
it has single covalent bonds only
it readily reacts with bromine
it cannot be polymerised to a plastic polymer
Which is TRUE about an alkene hydrocarbon molecule? [op-108]
it is saturated
it has single covalent bonds only
it does not readily react with bromine
it can be polymerised to a plastic polymer
The drawings show 'space-filling' diagrams of four hydrocarbon molecules. Which is unsaturated? [op-109]
molecule 2
molecule 1
molecule 3
molecule 6
The drawings show 'space-filling' diagrams of four hydrocarbon molecules. Which is an alkene? [op-110]
molecule 1
molecule 2
molecule 3
molecule 6
The drawings show 'space-filling' diagrams of four hydrocarbon molecules. Which are alkanes? [op-111]
molecules 2 and 4
molecule 2 only
molecules 1 and 3
molecule 1 only
The drawings show 'space-filling' diagrams of four hydrocarbon molecules. Which are alkenes? [op-112]
molecules 1 and 3
molecule 2 only
molecule 1 only
molecules 2 and 4
What polymer is formed from this molecule? [op-113]
poly(ethene)
poly(propene)
poly(styrene)
poly(vinyl chloride)
What polymer is formed from this molecule? [op-114]
poly(ethene)
poly(propene)
poly(styrene)
poly(vinyl chloride)
The drawings show 'space-filling' diagrams of four hydrocarbon molecules. Which has the formula C2H6? [op-115]
molecule 5
molecule 6
molecule 3
molecule 4
The drawings show 'space-filling' diagrams of four hydrocarbon molecules. Which has the formula C3H6? [op-116]
molecule 5
molecule 6
molecule 3
molecule 4
The drawings show 'space-filling' diagrams of four hydrocarbon molecules. Which has the formula C3H8? [op-117]
molecule 5
molecule 6
molecule 3
molecule 4
The drawings show 'space-filling' diagrams of four hydrocarbon molecules. Which has the formula C4H10? [op-118]
molecule 5
molecule 6
molecule 3
molecule 4
A student made some sketches of possible addition polymer structures. Which one of the following could be a correct structure? [op-149]
structure (2)
structure (4)
structure (3)
structure (5)
A student made some sketches of possible addition polymer structures. Which one of the following could be a correct structure? [op-150]
structure (4)
structure (6)
structure (3)
structure (5)
A test for alkenes is to shake it with bromine water and look for decolourisation of the orange colour of bromine. If ethene was tested in this way, which student correctly predicted the structure of the product? [op-151]
Joe
Tanya
Fred
Suzy
The bonding between atoms in a hydrocarbon molecule is? [op-152]
ionic only
intermolecular only
ionic and covalent
covalent only
'Cracking' or thermal decompostion is used in the oil industry to convert higher fractions of hydrocarbons into more useful molecules. For example, lower alkanes for petrol or alkenes for making plastics. Given the following cracking equation, what is the missing molecule? [op-153] C9H20 ==> C7H16 + ????
C2H4
C2H6
C3H6
C3H8
'Cracking' or thermal decompostion is used in the oil industry to convert higher fractions of hydrocarbons into more useful molecules. For example, lower alkanes for petrol or alkenes for making plastics. Given the following cracking equation, what is the missing molecule? [op-154] C10H22 ==> C6H12 + ????
C4H8
C4H10
2C2H4
C4H12
'Cracking' or thermal decompostion is used in the oil industry to convert higher fractions of hydrocarbons into more useful molecules. For example, lower alkanes for petrol or alkenes for making plastics. Given the following cracking equation, what is the missing molecule? [op-155] C10H22 ==> CH4 + C6H12 + ????
C2H4
C2H6
C3H6
C3H8
'Cracking' or thermal decompostion is used in the oil industry to convert higher fractions of hydrocarbons into more useful molecules. For example, lower alkanes for petrol or alkenes for making plastics. Given the following cracking equation, what is the missing molecule? [op-156] C12H26 ==> C2H4 + C7H14 + ????
C2H4
C4H8
C3H6
C3H8
Which is a suitable chemical test for an an alkene, to distinguish it from an alkane? [op-157]
an alkene decolourises orange bromine water
an alkene burns with a more smokey flame
an alkane reacts with bromine water when bright light is shone on the mixture
the alkane with the same number of carbon atoms has a slightly higher boiling point
Which of the following explains why alkenes are more reactive than alkanes? [op-158]
alkenes have a smaller molecular mass than the corresponding alkane with the same number of carbon atoms
alkenes have a reactive C=C double bond
alkenes have a lower boiling point than the corresponding alkane with the same number of carbon atoms
the C=C double bond in alkenes is weaker than than the C-C single bond
'Cracking' or thermal decompostion is used in the oil industry to convert higher fractions of hydrocarbons into more useful molecules. For example, lower alkanes for petrol or alkenes for making plastics. Given the following cracking equation, what is the missing molecule? [op-159] C16H34 ==> C2H4 + C7H16 + H2 + ????
C6H12
C6H14
C7H12
C7H14
'Cracking' or thermal decompostion is used in the oil industry to convert higher fractions of hydrocarbons into more useful molecules. For example, lower alkanes for petrol or alkenes for making plastics. Given the following cracking equation, what is the missing molecule? [op-160] C18H38 ==> C3H8 + C7H14 + H2 + ????
C7H16
C7H14
C8H16
C8H14
Which of the following statements is TRUE? [op-185]
the monomer to make polythene is ethene
unsaturated hydrocarbons are generally unreactive
unsaturated hydrocarbons have no carbon-carbon double bond
a hydrocarbon of formula C3H8 will decolourise bromine water
Which of the following statements is TRUE? [op-186]
the monomer to make polythene is ethane
unsaturated hydrocarbons are generally reactive
unsaturated hydrocarbons have no carbon-carbon double bond
a hydrocarbon of formula C3H8 will decolourise bromine water
Which of the following statements is TRUE? [op-187]
the monomer to make polythene is ethane
unsaturated hydrocarbons are generally unreactive
unsaturated hydrocarbons have a carbon-carbon double bond
a hydrocarbon of formula C4H10 will decolourise bromine water
Which of the following statements is TRUE? [op-188]
the monomer to make polypropene is propane
unsaturated hydrocarbons are generally unreactive
unsaturated hydrocarbons have no carbon-carbon double bond
a hydrocarbon of formula C4H8 will decolourise bromine water
Which of the following statements is TRUE? [op-189]
the monomer to make polypropene is propene
unsaturated hydrocarbons are generally unreactive
unsaturated hydrocarbons have no carbon-carbon double bond
a hydrocarbon of formula C4H10 will decolourise bromine water
Which of the following statements is TRUE? [op-190]
the monomer to make polypropene is propane
the products of cracking a long chain hydrocarbon are more volatile
unsaturated hydrocarbons have no carbon-carbon double bond
a hydrocarbon of formula C4H10 will decolourise bromine water
Which of the following statements is TRUE? [op-191]
a hydrocarbon of formula C4H10 will decolourise bromine water
the monomer to make polypropene is propane
the products of cracking a long chain hydrocarbon are more flammable
addition polymers are made by combining alkane monomers
Which of the following statements is TRUE? [op-192]
a hydrocarbon of formula C4H10 will decolourise bromine water
the monomer to make polypropene is propane
the products of cracking a long chain hydrocarbon are more viscous
addition polymers are made by combining alkene monomers
Which of these will decolourise bromine water? [op-193]
ethene
poly(ethene)
propane
butane
Which of these will decolourise bromine water? [op-194]
ethane
propene
propane
poly(ethene)
The general formula for alkanes is CnH2n + 2, where n is an integer (1, 2, 3 etc.). Which is the correct general formula for an alkene? [op-195]
CnH2n + 1
CnHn
CnH2n
CnH2n - 2
The general formula for alkenes is CnH2n, where n is an integer (1, 2, 3 etc.). Which is the correct general formula for an alkane? [op-196]
CnH2n + 1
CnHn
CnH2n - 2
CnH2n + 2
Which of these statements is TRUE about crude oil and fractional distillation? [op-197]
crude oil consists of short and long chain hydrocarbons
short chain hydrocarbons condense at the bottom of the column
crude oil fractions are burned to crack them
hydrocarbons at the bottom of the column have a low viscosity
Which of these statements is TRUE about crude oil and fractional distillation? [op-198]
crude oil consists of long chain hydrocarbons
short chain hydrocarbons condense at the top of the column
crude oil fractions are burned to crack them
hydrocarbons at the bottom of the column have a low viscosity
Which of these statements is TRUE about crude oil and fractional distillation? [op-199]
crude oil consists of long chain hydrocarbons
long chain hydrocarbons condense at the top of the column
crude oil fractions are heated with a catalyst to crack them
hydrocarbons at the bottom of the column have a low viscosity
Which of these statements is TRUE about crude oil and fractional distillation? [op-200]
crude oil consists of long chain hydrocarbons
long chain hydrocarbons condense at the top of the column
crude oil fractions are burned to crack them
hydrocarbons at the bottom of the column have a high viscosity
Which of these statements is TRUE about crude oil and fractional distillation? [op-201]
hydrocarbons at the top of the column are flammable
long chain hydrocarbons condense at the top of the column
crude oil fractions are burned to crack them
hydrocarbons at the bottom of the column have a low viscosity
Which of these statements is TRUE about crude oil and fractional distillation? [op-202]
hydrocarbons at the bottom of the column are flammable
surplus long chain fractions can be cracked to make more petrol
very short chain fractions are cracked to make alkenes for plastics
hydrocarbons towards the bottom of the column have no use at all
Which of these statements is TRUE about crude oil and fractional distillation? [op-203]
hydrocarbons at the bottom of the column are flammable
very short chain fractions can be cracked to make more petrol
surplus long chain fractions are cracked to make alkenes for plastics
hydrocarbons towards the bottom of the column have no use at all
Which of these statements is TRUE about crude oil and fractional distillation? [op-204]
hydrocarbons at the bottom of the column are flammable
very short chain fractions can be cracked to make more petrol
long chain fractions cannot be cracked to make alkenes for plastics
hydrocarbons towards the bottom of the column have some limited uses
The diagram shows the formation of a polymer. Which is TRUE? [op-205]
in the monomer molecule the bonds shown between the carbon atoms are double covalent bonds
the monomer is reactive because it has easily broken single bond
the diagram shows a condensation polymerisation
when W, X, Y and Z are hydrogen the monomer is ethane and the polymer is poly(ethane)
The diagram shows the formation of a polymer. Which is TRUE? [op-206]
in the monomer molecule the bonds shown between the carbon atoms are triple covalent bonds
the monomer is reactive because it has an easily broken double bond
the diagram shows a condensation polymerisation
when W, X, Y and Z are hydrogen the monomer is ethane and the polymer is poly(ethane)
The diagram shows the formation of a polymer. Which is TRUE? [op-207]
in the monomer molecule the bonds shown between the atoms are all single covalent bonds
the monomer is reactive because it has an easily broken single bond
the diagram shows an addition polymerisation
when W, X, Y and Z are hydrogen the monomer is ethane and the polymer is poly(ethane)
The diagram shows the formation of a polymer. Which is TRUE? [op-208]
in the monomer molecule the bonds shown between the atoms are all single covalent bonds
the monomer is reactive because it has an easily broken single bond
the diagram shows a condensation polymerisation
when W, X, Y and Z are hydrogen the monomer is ethene and the polymer is poly(ethene)
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Which of the following is a chemical test for the gas hydrogen? [id-01]
Which gas is formed when a metal reacts with an acid? [id-05]
A brown solution of a substance turns dark blue when a drop of starch solution was added. The substance is most likely to be? [id-09]
A sample of a salt was dissolved in hydrochloric acid. A platinum wire was dipped into the solution and then placed in a roaring bunsen flame. A bright yellow flame colour was produced. From this 'flame test' observation, what was the identity of the metal ion in the salt? [id-21]
A white solid X dissolved in dilute hydrochloric. A colourless gas evolved which turned limewater milky. When a drop of the solution, on the end of a platium wire, a bright yellow flame colour was observed when the platinum wirewas placed in a roaring bunsen flame. From these observations deduce the identity of substance X. [id-25]
Which word corresponds to a hydrocarbon molecule? [op-13]
Which word corresponds to methane gas? [op-17]
Which word corresponds to hydrogen? [op-18]
Which word means changing a gas into liquid? [op-21]
Which word means breaking up big molecules into small ones? [op-22]
Which of the following is TRUE about crude oil? [op-45]
Which is TRUE as a hydrocarbon molecule gets bigger (more carbon atoms in chain)? [op-53]
Making plastics is an example of? [op-58]
Which is a chemical test for the gas hydrogen? [op-77]
Which of the following, when fossil fuels are burned, causes acid rain? [op-81]
At 1 the crude oil is a ..?.. of hydrocarbons. [op-85]
Which is a definition of an atom? [op-120]
Which of the following means a 'hydrocarbon'? [op-124]
Which statement is TRUE about polymers (plastics)? [op-126]
Which statement is TRUE about polymers (plastics)? [op-127]
Which explains why the gasoline fraction is used for petrol? [op-133]
What may be formed by the incomplete combustion of petrol? [op-162]
Which is a hydrocarbon molecule? [op-169]
The following 'carbon numbers' correspond to gasoline, bottled gas, bitumen and kerosine. Which is likely to be gasoline? [op-170]
[op-1] Which four quantities a, b, c and d are required to balance the equation?
[op-2] Which four quantities a, b, c and d are required to balance the equation?
Which molecule is natural gas? [op-25]
Which molecule has the lowest boiling point? [op-27]
Which is TRUE about an alkane hydrocarbon molecule? [op-101]
A student made some sketches of possible addition polymer structures. Which one of the following could be a correct structure? [op-149]
A test for alkenes is to shake it with bromine water and look for decolourisation of the orange colour of bromine. If ethene was tested in this way, which student correctly predicted the structure of the product? [op-151] 
Which of these statements is TRUE about crude oil and fractional distillation? [op-197]
The diagram shows the formation of a polymer. Which is TRUE? [op-205]
