Questão 1
Questão
What is not the correct use of the fraction named?
Questão 2
Questão
Four organic compounds are listed.
ethane
ethanoic acid
ethanol
ethene
Which bond do all four compounds contain?
Questão 3
Questão
The first three members of a homologous series are shown.
Why do these molecules represent a homologous series?
Responda
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because they contain fluorine and carbon atoms
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because they have saturated bonds
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because they have the same functional group
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because they react differently from each other
Questão 4
Questão
Which substances can be obtained by cracking hydrocarbons?
Responda
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ethanol and ethene
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ethanol and hydrogen
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ethene and hydrogen
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ethene and poly(ethene)
Questão 5
Questão
Which reaction is used to make ethanol?
Questão 6
Questão
Polymers are long-chain molecules made from small molecules linked together.
Four polymers or types of polymer are listed.
1 carbohydrates
2 nylon
3 proteins
4 Terylene
Which of these polymers or types of polymer are synthetic?
Responda
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A 1 and 3
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B 1 and 4
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C 2 and 3
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D 2 and 4
Questão 7
Questão
Which compounds belong to the same homologous series?
Questão 8
Questão
The equations for two important processes used to manufacture ethanol are shown.
Which statement is not correct?
Responda
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A Both processes require a catalyst.
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B Both processes use a starting material obtained from petroleum.
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C Process 1 shows the production of a renewable fuel.
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D Process 2 is an addition reaction.
Questão 9
Questão
Part of the label on the packet of a potato product is shown.
Which constituent is a natural polymer?
Responda
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A ethanoic acid
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B sodium chloride
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C starch
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D sugar
Questão 10
Questão
The structures of some organic compounds are shown.
Which compounds belong to the same homologous series?
Responda
-
A 1 and 2
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B 1 and 3
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C 2 and 3
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D 3 and 4
Questão 11
Questão
Sugars and ethene can both be made into ethanol using different reactions.
Which type of reaction is used in each case?
Questão 12
Questão
Which substances are natural polymers?
Questão 13
Questão
What is the name of fraction X?
Responda
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A alcohol
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B fuel oil
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C naphtha
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D paraffin
Questão 14
Questão
Which pair of molecules are hydrocarbons?
Questão 15
Questão
Which bond is not present in the structure of ethanol, CH3CH2OH?
Questão 16
Questão
Which change on the diagram involves combustion?
(Some of the reaction products are not shown on the diagram.)
Questão 17
Questão
The structures of three molecules are shown.
Which homologous series is NOT represented?
Responda
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A alcohols
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B alkanes
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C alkenes
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D carboxylic acids
Questão 18
Questão
Information about four hydrocarbons is shown.
Which statement is correct?
Responda
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A Hydrocarbon W has the formula CH4 and can be polymerised.
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B Hydrocarbon X has the formula C2H4 and can be polymerised.
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C Hydrocarbon Y has the formula C3H6 and can be polymerised.
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D Hydrocarbon Z has the formula C4H10 and can be polymerised.
Questão 19
Questão
Which structure represents a compound that dissolves in water to form an acidic solution?
Questão 20
Questão
Which pollutant gas can be produced as a result of incomplete combustion ofoctane, C8H18?
Responda
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A carbon
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B carbon dioxide
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C carbon monoxide
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D methane
Questão 21
Questão
Which compounds are alkanes?
Responda
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A W and X
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B W and Z
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C X and Y
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D Y and Z
Questão 22
Questão
The statements below are about the alcohol homologous series.
The alcohols have the same ......1...... formula.
The alcohols have ......2...... chemical properties because they have the same......3...... .
The melting points of the alcohols ......4...... as the number of carbon atoms increases.
Which words correctly complete gaps 1–4?
Questão 23
Questão
Which structure represents a compound that dissolves in water to form an acidic solution?
Questão 24
Questão
The partial structure of an addition polymer is shown.
What is the structure of the monomer used to make this polymer?
Questão 25
Questão
Which statement about polymers is correct?
Responda
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A Addition polymers are all biodegradable.
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B Condensation polymers can all be hydrolysed to give amino acids.
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C Condensation polymers only exist in nature.
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D Forming addition polymers produces only one product.