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Worksheets

National 5 Unit 2 Revision

Total questions: 140

Worksheet time: 12hrs 40mins

Name
Class
Date
1.

Which of these does not belong to the same homologous series?

a)

pentane

b)

cyclopropane

c)

propane

d)

hexane

2.

Which of these is a use for alkanes?

a)

to make plastics

b)

fuels

c)

solvent

d)

to make alcohols

3.

What is the general formula of an alkane?

a)

CnH2n+1

b)

CnH2n-1

c)

CnH2n

d)

CnH2n+2

4.

What is the general formula of an alkene?

a)

CnH2n+1

b)

CnH2n-1

c)

CnH2n

d)

CnH2n+2

5.

What is the general formula of cycloalkane?

a)

CnH2n+1

b)

CnH2n-1

c)

CnH2n

d)

CnH2n+2

6.

What does this describe 'substances with the same molecular formula but different structural formula'

a)

homologous series

b)

hydrocarbon

c)

isomer

d)

none of these

7.

What does this describe 'a family of compounds with the same general formula and similar chemical properties' ?

a)

homologous series

b)

hydrocarbon

c)

isomer

d)

none of these

8.

What does this describe 'a substance that contains only hydrogen and carbon' ?

a)

homologous series

b)

hydrocarbon

c)

isomer

d)

none of these

9.

What do you call an alkene with 2 carbons?

a)

ethane

b)

ethene

c)

propane

d)

propene

10.

What would an alkane with 8 carbons be called?

a)

octene

b)

heptene

c)

heptane

d)

octane

11.

Which alkane has 8 hydrogens?

a)

octane

b)

propane

c)

pentane

d)

hexane

12.

If an alkene has 20 carbons, how many hydrogens would it have?

a)

20

b)

40

c)

41

d)

42

13.

If an alkene had 20 hydrogens, how many carbons would it have?

a)

8

b)

10

c)

40

d)

42

14.

If an alkane had 20 carbons, how many hydrogens would it have?

a)

10

b)

8

c)

40

d)

42

15.

When bromine is added to an alkene it makes ....

a)

a dihaloalkane

b)

an alcohol

c)

an alkane

d)

a cycloalkane

16.

What type of reaction occurs when hydrogen is added to an alkene?

a)

hydration

b)

halogenation

c)

hydrogenation

d)

none of these

17.

Which of these reactions would make an alcohol?

a)

hydration

b)

hydrogenation

c)

halogenation

d)

none of these

18.

What is the name of this alkane?

a)

2,3-dimethylpropane

b)

3,4-dimethylpropane

c)

2,3-dimethylpentane

d)

3,4-dimethylpentane.

19.

The shortened structural formula for an organic compound is CH3CH(CH3)CH(OH)C(CH3)3

Which of the following is another way of representing this structure?

a)
b)
c)
d)
20.

Which of these does not belong to the same homologous series?

a)

pentane

b)

cyclopropane

c)

propane

d)

hexane

21.

Which of these is a use for alkanes?

a)

to make plastics

b)

fuels

c)

solvent

d)

to make alcohols

22.

What is the general formula of an alkane?

a)

CnH2n+1

b)

CnH2n-1

c)

CnH2n

d)

CnH2n+2

23.

What is the general formula of an alkene?

a)

CnH2n+1

b)

CnH2n-1

c)

CnH2n

d)

CnH2n+2

24.

What is the general formula of cycloalkane?

a)

CnH2n+1

b)

CnH2n-1

c)

CnH2n

d)

CnH2n+2

25.

What does this describe 'substances with the same molecular formula but different structural formula'

a)

homologous series

b)

hydrocarbon

c)

isomer

d)

none of these

26.

What does this describe 'a family of compounds with the same general formula and similar chemical properties' ?

a)

homologous series

b)

hydrocarbon

c)

isomer

d)

none of these

27.

What does this describe 'a substance that contains only hydrogen and carbon' ?

a)

homologous series

b)

hydrocarbon

c)

isomer

d)

none of these

28.

What do you call an alkene with 2 carbons?

a)

ethane

b)

ethene

c)

propane

d)

propene

29.

What would an alkane with 8 carbons be called?

a)

octene

b)

heptene

c)

heptane

d)

octane

30.

Which alkane has 8 hydrogens?

a)

octane

b)

propane

c)

pentane

d)

hexane

31.

If an alkene has 20 carbons, how many hydrogens would it have?

a)

20

b)

40

c)

41

d)

42

32.

If an alkene had 20 hydrogens, how many carbons would it have?

a)

8

b)

10

c)

40

d)

42

33.

If an alkane had 20 carbons, how many hydrogens would it have?

a)

10

b)

8

c)

40

d)

42

34.

When bromine is added to an alkene it makes ....

a)

a dihaloalkane

b)

an alcohol

c)

an alkane

d)

a cycloalkane

35.

What type of reaction occurs when hydrogen is added to an alkene?

a)

hydration

b)

halogenation

c)

hydrogenation

d)

none of these

36.

Which of these reactions would make an alcohol?

a)

hydration

b)

hydrogenation

c)

halogenation

d)

none of these

37.

What is the name of this alkane?

a)

2,3-dimethylpropane

b)

3,4-dimethylpropane

c)

2,3-dimethylpentane

d)

3,4-dimethylpentane.

38.

The shortened structural formula for an organic compound is CH3CH(CH3)CH(OH)C(CH3)3

Which of the following is another way of representing this structure?

a)
b)
c)
d)
39.

Three members of the cycloalkene homologous series are shown.

Which of the following is the general formula for this homologous series?

a)

CnH2n—4

b)

CnH2n+2

c)

CnH2n

d)

CnH2n—2

40.

Which of the following compounds belongs to the same homologous series as the compound with the molecular formula C3H8?

a)
b)
c)
d)
41.

The systematic name for the structure shown is

a)

1,2-dimethylpent-1-ene

b)

2,3-dimethylpent-1-ene

c)

3,4-dimethylpent-4-ene

d)

3,4-dimethylpent-1-ene

42.

Two isomers of butene are shown.

Which of the following structures represents a third isomer of butene?

a)
b)
c)
d)
43.

Which of the following could be the molecular formula for an alkane?

a)

C7H16

b)

C7H14

c)

C7H12

d)

C7H10

44.

A student added bromine solution to compound X and compound Y. These are shown in the picture. Which substance(s) would decolourise bromine solution?

a)

Compound X only

b)

Compound Y only

c)

Compound X and Y

d)

Neither compound X nor Y

45.
How many carbon atoms are in methane?
a)
1
b)
2
c)
3
d)
4
46.
How many carbon atoms are in ethane?
a)
1
b)
2
c)
3
d)
4
47.
Hydrocarbons are compounds that contain
a)
  Carbon and Nitrogen
b)
Carbon and Hydrogen 
c)
  Carbon, and Oxygen
d)
Carbon, Oxygen, and  Hydrogen 
48.

Which of these does not belong to the same homologous series?

a)

pentane

b)

cyclopropane

c)

propane

d)

hexane

49.

What is the general formula of an alkane?

a)

CnH2n+1

b)

CnH2n-1

c)

CnH2n

d)

CnH2n+2

50.

What is the general formula of an alkene?

a)

CnH2n+1

b)

CnH2n-1

c)

CnH2n

d)

CnH2n+2

51.

What is the general formula of cycloalkane?

a)

CnH2n+1

b)

CnH2n-1

c)

CnH2n

d)

CnH2n+2

52.

What does this describe 'substances with the same molecular formula but different structural formula'

a)

homologous series

b)

hydrocarbon

c)

isomer

d)

none of these

53.

What does this describe 'a family of compounds with the same general formula and similar chemical properties' ?

a)

homologous series

b)

hydrocarbon

c)

isomer

d)

none of these

54.

What does this describe 'a substance that contains only hydrogen and carbon' ?

a)

homologous series

b)

hydrocarbon

c)

isomer

d)

none of these

55.

What do you call an alkene with 2 carbons?

a)

ethane

b)

ethene

c)

propane

d)

propene

56.

What would an alkane with 8 carbons be called?

a)

octene

b)

heptene

c)

heptane

d)

octane

57.

Which alkane has 8 hydrogens?

a)

octane

b)

propane

c)

pentane

d)

hexane

58.

If an alkene has 20 carbons, how many hydrogens would it have?

a)

20

b)

40

c)

41

d)

42

59.

If an alkene had 20 hydrogens, how many carbons would it have?

a)

8

b)

10

c)

40

d)

42

60.

If an alkane had 20 carbons, how many hydrogens would it have?

a)

10

b)

8

c)

40

d)

42

61.

When bromine is added to an alkene it makes ....

a)

a dihaloalkane

b)

an alcohol

c)

an alkane

d)

a cycloalkane

62.

What type of reaction occurs when hydrogen is added to an alkene?

a)

hydration

b)

halogenation

c)

hydrogenation

d)

none of these

63.

Which of these reactions would make an alcohol?

a)

hydration

b)

hydrogenation

c)

halogenation

d)

none of these

64.

What is the name of this alkane?

a)

2,3-dimethylpropane

b)

3,4-dimethylpropane

c)

2,3-dimethylpentane

d)

3,4-dimethylpentane.

65.

Three members of the cycloalkene homologous series are shown.

Which of the following is the general formula for this homologous series?

a)

CnH2n—4

b)

CnH2n+2

c)

CnH2n

d)

CnH2n—2

66.

Which of the following compounds belongs to the same homologous series as the compound with the molecular formula C3H8?

a)
b)
c)
d)
67.

The systematic name for the structure shown is

a)

1,2-dimethylpent-1-ene

b)

2,3-dimethylpent-1-ene

c)

3,4-dimethylpent-4-ene

d)

3,4-dimethylpent-1-ene

68.

Two isomers of butene are shown.

Which of the following structures represents a third isomer of butene?

a)
b)
c)
d)
69.

Which of the following could be the molecular formula for an alkane?

a)

C7H16

b)

C7H14

c)

C7H12

d)

C7H10

70.

A student added bromine solution to compound X and compound Y. These are shown in the picture. Which substance(s) would decolourise bromine solution?

a)

Compound X only

b)

Compound Y only

c)

Compound X and Y

d)

Neither compound X nor Y

71.
How many carbon atoms are in methane?
a)
1
b)
2
c)
3
d)
4
72.
How many carbon atoms are in ethane?
a)
1
b)
2
c)
3
d)
4
73.
The following compounds have a molecular formula of
a)
CnH2n+2
b)
CH4
c)
C6H14
d)
CH3CH2CH2CH2CH2CH3
74.
Name this alkane
a)
Methane
b)
Ethane
c)
Propane
d)
Butane
75.
How many carbon atoms are in methane?
a)
1
b)
2
c)
3
d)
4
76.
Name this alkane
a)
Methane
b)
Ethane
c)
Propane
d)
Butane
77.
Name this alkane
a)
Methane
b)
Ethane
c)
Propane
d)
Butane
78.
Hydrocarbons are compounds that contain
a)
  Carbon and Nitrogen
b)
Carbon and Hydrogen 
c)
  Carbon, and Oxygen
d)
Carbon, Oxygen, and  Hydrogen 
79.
Which of the following will react with Br2(l)
a)
hexene 
b)
cyclohexane
c)
hexane
d)
alkanes
80.
Which of the following undergoes addition reactions
a)
alkanes
b)
alkanes and alkenes
c)
alkanes and alkynes
d)
alkenes
81.

Organic compound in the same homologous series have the following characteristic, except ....

a)

Same general formula

b)

Same functional group

c)

Similar chemical properties

d)

Same physical properties

82.

Ethene and propene are alkene in the same homologous series. Complete the following sentence about a homologous series using words from the list below.


A homologous series is a family of similar ……….. with similar….. properties due to the same ….. group.


LIST

alcohols

functional

chemical

mixtures

compounds

physical

elements


The right words to complete the sentence respectively are ….

a)

alcohols, chemicals, compounds

b)

functional, chemical, mixtures

c)

compounds, chemical, functional

d)

mixtures, chemical, compound

83.

The molecular formula below which shown the alkanes compound is ….

a)

C2H4

b)

C3H7

c)

C4H10

d)

C5H8

84.

The name for this compound is ....

a)

2-ethylpropane

b)

1,1-dimethylpropane

c)

2-methylbutane

d)

3-methylbutane

85.

The structure of some hydrocarbon are shown above. The hydrocarbon that classified into saturated compound are ....

a)

F, G, H

b)

F, G, I

c)

G, I, K

d)

F & G

86.

Is the name of single bonded, saturated hydrocarbons.

a)

Alkanes

b)

Alkenes

c)

Alkynes

d)

Tanins

87.

Is the name of doubled bonded, unsaturated hydrocarbons.

a)

Alkanes

b)

Alkenes

c)

Allkynes

d)

Tanins

88.

is the alkene with 3 carbons in its chain.

a)

Ethene

b)

Propene

c)

Methene

d)

Decene

89.

Is the simplest alkane

a)

Ethane

b)

Methane

c)

Propane

d)

Decane

90.

How many chemical bonds can each carbon atom form?

a)

one

b)

two

c)

three

d)

four

91.

What prefix do we use for alkanes that are arranged in a loop?

a)

ring-

b)

cyclic-

c)

cyclo-

92.

What is the molecular formula for cyclopropane?

a)
b)
c)
d)
93.

What is the molecular formula of cyclopentane?

a)
b)
c)
d)
94.

Name this molecule

a)

nonane

b)

decane

c)

cyclodecane

d)

cyclooctane

95.

Name this molecule

a)

methylhexane

b)

methylcyclohexane

c)

1-methylhexane

d)

1-methylcyclohexane

96.

Name this molecule

a)

cyclohexane

b)

1,2-dimethylcyclohexane

c)

1,2-methylcyclohexane

d)

1,6-dimethylcyclohexane

97.

What happens during an addition reaction in terms of bonding? Tick two.

a)

Carbon-carbon double bond remains the same.

b)

Carbon-carbon double bonds open up.

c)

The two carbon atoms bond to atoms of another molecule.

d)

Only one carbon bonds with another molecule.

98.

What type of reaction is shown?

a)

Polymerisation

b)

Bromination

c)

Hydrogenation

d)

Hydration

99.

What type of reaction is shown?

a)

Polymerisation

b)

Hydrogenation

c)

Hydration

d)

Bromination

100.

When an alkane is added to bromine water it remains orange. Why?

a)

There is reaction is taking place.

b)

There is no reaction taking place.

101.
Classify the compound based on the functional group present.
a)
carboxylic acid
b)
aldehyde
c)
alcohol
d)
ether
102.

What functional group is -OH

a)

Hydroxyl

b)

Carboxyl

c)

Amino

d)

Carbonyl Ketone

103.

what is the name of this molecule?

a)

2-methoxypropane

b)

2-methylpropan-2-ol

c)

2-methylpropan-1-ol

d)

trimethylmethanol

104.

What is the name of this molecule?

a)

propan-1-ol

b)

propantriol

c)

3-hydroxypropan-1,2-diol

d)

propan-1,2,3-triol

105.

Name this branched alcohol

a)

propanol

b)

2-methylpropan-1-ol

c)

2-methylpropan-2-ol

d)

butanol

106.

Name the compound

a)

hexane

b)

hexanol

c)

propoxypropane

d)

3-hexanol

107.

Which one of the following compounds is not an isomer of the others?

a)
b)
c)
d)
e)
108.

Name the compound

a)

2-methylbutan-3-ol

b)

Butan-2-ol

c)

3-methylbutan-2-ol

d)

3-ethylbutan-2-ol

109.

What is the functional group of alcohols?

a)

–NH2

b)

–COOH

c)

–CHO

d)

–OH

e)

–NO2

110.

Which of these reactions would make an alcohol?

a)

hydration

b)

hydrogenation

c)

halogenation

d)

none of these

111.

The shortened structural formula for an organic compound is CH3CH(CH3)CH(OH)C(CH3)3

Which of the following is another way of representing this structure?

a)
b)
c)
d)
112.

This compound is 2-ethyl-3-methylbutane

a)

True

b)

False

113.

Name this compound

a)

2-methylpent-2-ene

b)

hex-2-ene

c)

2-methylpent-3-ene

d)

4-methylpent-3-ene

e)

hex-3-ene

114.

The name for this compound is ....

a)

2-ethylpropane

b)

1,1-dimethylpropane

c)

2-methylbutane

d)

3-methylbutane

115.

The name for the compound is ....

a)

2,3-dimethylpropane

b)

3,4-dimethylpropane

c)

2,3-dimethylpentane

d)

3,4-dimethylpentane

116.

How many propyl groups are on the following molecule?

a)

1

b)

2

c)

3

d)

4

117.

How many carbons are in the longest chain?

Be careful - It's a bent molecule!

a)

7

b)

8

c)

9

d)

10

118.

How many carbons are in the longest chain?

Be careful - It's a bent molecule!

a)

7

b)

8

c)

9

d)

10

119.

What is the correct name for the following compound?

a)

3,4-dimethylheptane

b)

4-methyl-5-ethylhexane

c)

3-methyl-4-propylpentane

120.

Which is the structures with IUPAC nomenclature


2,2,4-trimethylpentane

a)
b)
c)
d)
121.
Name the compound
a)
hexane
b)
2,3-dimethylbutane
c)
ethylbutane
d)
2,2-dimethylbutane
122.
Name this compound.
a)
heptane
b)
2-methylhexane
c)
5-methylhexane
d)
hexane
123.
Name this compound
a)
pentene
b)
2-pentene
c)
4-pentene
d)
hexene
124.
Name the compound
a)
Pentane
b)
2-methylbutane
c)
2-methylpropane
d)
2,2-dimethylpropane
125.

The name for this compound is ....

a)

2-ethylpropane

b)

1,1-dimethylpropane

c)

2-methylbutane

d)

3-methylbutane

126.

The name for the compound is ....

a)

2,3-dimethylpropane

b)

3,4-dimethylpropane

c)

2,3-dimethylpentane

d)

3,4-dimethylpentane

127.

The systematic name for the structure shown is

a)

1,1-dimethylpropane

b)

2-methylbutane

c)

3-methylbutane

d)

2-methylpentane

128.

Compounds that are composed of the same number and type of atoms but have them arranged in different ways are ___________.

a)

isomers

b)

isotopes

c)

polymers

d)

alkanes

129.

What type of reaction is shown?

a)

Polymerisation

b)

Bromination

c)

Hydrogenation

d)

Hydration

130.

What type of reaction is shown?

a)

Polymerisation

b)

Hydrogenation

c)

Hydration

d)

Bromination

131.

What type of reaction is shown?

a)

Polymerisation

b)

Hydration

c)

Hydrogenation

d)

Bromination

132.

Given the formula representing a compound:


Which formula represents an isomer of this compound?

a)
b)
c)
d)
133.

Which formulas represent compounds that are isomers of each other?

a)
b)
c)
d)
134.

Given a formula representing a compound:Which formula represents an isomer of this compound?

a)
b)
c)
d)
135.

Given the structural formulas:


Which two formulas represent compounds that are isomers of each other?

a)

A and B

b)

A and C

c)

B and D

d)

C and D

136.

Which structural formula represents a molecule that is not an isomer of pentane?

a)
b)
c)
d)
137.

Which compound has an isomer?

a)
b)
c)
d)
138.
Are the compounds shown isomers
a)
Yes
b)
No
139.
Are the following molecules isomers?
a)
Yes
b)
No
140.
Are the following molecules isomers?
a)
Yes
b)
No

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