1
1 mark
Which of the following formulae shows an alkane?
C2H4
C4H8
C4H10
C5H10
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Formulae, Functional Groups & Terminology (Cambridge (CIE) IGCSE Chemistry): Exam Questions
Exam code: 0620 & 0971
4 hours46 questions
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2
1 mark
Which of the following structures shows a compound that belongs to a different homologous series to octane?
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3
1 mark
The diagram shows the structure of ethene.
Which of these compounds has similar chemical properties of ethene?
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4
1 mark
The structures of four organic compounds are shown.
Which one does not show the displayed formula of the compound?
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5
1 mark
Extended Only
Which of the following is not a feature of a homologous series?
Compounds have the same functional group
Compounds have the same physical properties
Compounds have the same general formula
Compounds have similar chemical properties
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6
1 mark
Which diagram shows the correct displayed formula for butanoic acid?
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1
1 mark
Which one of the following structures is correctly named?
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2
1 mark
Organic compounds can have names that have the suffixes of -ane, -ene, -ol or -oic acid.
How many of these have at least one double bond in their structure
1
2
3
4
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3
1 mark
When the number of atoms in a molecule of a hydrocarbon increases, the amount of energy released when it burns increases.
What is the correct order?
| less energy | → | more energy released |
A | methane | ethene | ethane |
B | ethene | ethane | methane |
C | ethene | methane | ethane |
D | methane | ethane | ethene |
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4
1 mark
The diagram below represents the molecule of a compound.
What is the name of this compound?
Ethane
Ethanol
Ethanoic acid
Ethene
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5
1 mark
Separate: Chemistry and Extended Only
The structures of six organic compounds compound A are shown.
Which two compounds are isomers of one another?
B and D
A and C
C and F
C and E
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6
1 mark
Three statements about propane and propanol are listed below.
Propane and propanol belong to the same homologous series
Propanol is a compound that contains three carbon atoms
Propane is an unsaturated hydrocarbon
Which statements are correct?
1 and 2 only
1 and 3 only
2 only
3 only
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1
1 mark
The first three members of a homologous series are shown.
Why do these molecules represent a homologous series?
They contain carbon and hydrogen atoms.
They have saturated bonds.
They have the same functional group.
They react differently from each other.
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2
1 mark
Which pair of the following structures shows a homologous series?
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3
1 mark
Which group of compounds is from a homologous series?
CH3OH, C2H5OH, C3H7OH
C3H6, C3H8, C3H7OH
CH4, C2H4, C3H8
CH3CO2H, CH3CH2OH, HCO2H
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4
1 mark
Extended Only
The diagram below shows some simple hydrocarbons and the products of two reactions.
Which of these structures are named correctly?
| Structure 1 | Structure 2 | Structure 3 |
A | x | ✔ | ✔ |
B | ✔ | ✔ | ✔ |
C | x | ✔ | x |
D | ✔ | x | ✔ |
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5
1 mark
Extended Only
The diagram below shows a reaction scheme. What are the names of all of the compounds?
| P | Q | R | S |
A | ethene | ethane | ethanoic acid | ethanol |
B | ethane | ethene | ethanol | ethanoic acid |
C | ethene | ethane | ethanol | ethanoic acid |
D | ethane | ethene | ethanoic acid | ethanol |
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6
1 mark
The displayed formula of an organic compound is shown.
What is the name of this compound?
butan-1-ol
butan-2-ol
butan-3-ol
butanol
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7
1 mark
W, X, Y and Z are the first four members of the carboxylic acid homologous series, but not necessarily in that order.
The table shows their relative molecular masses, Mr.
substance | relative molecular mass, Mr |
W | 60 |
X | 88 |
Y | 46 |
Z | 74 |
Which sequence shows the substances in order of decreasing boiling point?
X → Z → W → Y
Y → W → Z → X
W → X → Y → Z
Z → X → W →Y
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