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Chapter 15 Alkanes and Alkenes

Total questions: 41

Worksheet time: 25mins

Name
Class
Date
1.
How many carbon atoms are in propane
a)
1
b)
2
c)
3
d)
4
2.
How many hydrogen atoms are in butane
a)
4
b)
6
c)
8
d)
10
3.
Name this alkane
a)
Methane
b)
Ethane
c)
Propane
d)
Butane
4.
Name this alkane
a)
Methane
b)
Ethane
c)
Propane
d)
Butane
5.
The "ane" ending in "alkane" tells someone that they are dealing with _________-bonded carbons.
a)
single
b)
double
c)
triple
d)
quadruple
6.
General formula of Alkane is 
a)
CnH2n+2
b)
CnH2n
c)
CnH2n+1OH
d)
CnH2n+1COOH
7.
Classify the compound based on the functional group present.
a)
alkane
b)
alkene
c)
alkyne
d)
aromatic
8.

What chemical is this? (C5H10)

a)

Pentene

b)

Pentane

c)

Hexane

d)

Heptene

9.

Which of the following shows the structure of ethene?

a)
b)
c)
d)
10.

Which of the following is unsaturated hydrocarbon ?

a)

propane

b)

propene

c)

propanol

d)

propanoic acid

11.

A compound consists of carbon and hydrogen elements only. It also contains a carbon-carbon double bond. This compound is known as

a)

saturated organic compound

b)

unsaturated organic compound

c)

saturated hydrocarbon

d)

unsaturated hydrocarbon

12.

What are the products formed when organic compounds burn completely ?

a)

carbon and oxygen

b)

carbon dioxide and water

c)

carbon, carbon monoxide and water

d)

carbon, carbon dioxide and water

13.

Ethane reacts with bromine under suitable condition.

Which of the following is a product of this reaction?

a)

bromomethane

b)

dibromoemethane

c)

bromoethane

d)

tribromopropane

14.

Which of the following is not a chemical properties of alkenes?

a)

combustion

b)

substitution

c)

addition reaction

d)

polymerisation

15.
How many carbon atoms are in propane
a)
1
b)
2
c)
3
d)
4
16.

Methane reacts with chlorine in substitution reaction. Which of these is an essential condition?

a)

An acid catalyst

b)

A low temperature

c)

UV light

d)

A low pressure

17.

Alkanes react with excess oxygen to form

a)

carbon dioxide and water

b)

salt and water

c)

carbon monoxide and soot

d)

metal hydroxide and hydrogen

18.
Which of the following would have the highest melting point?
a)
C3H8
b)
C4H8
c)
C5H12
d)
C22H44
19.

Hydrocarbons are compounds that contain

a)

Carbon, only

b)

Carbon and Hydrogen, only

c)

Carbon and Hydrogen and sometimes Oxygen

d)

Carbon, Oxygen and Hydrogen only

20.
How many carbon atoms are in methane?
a)
1
b)
2
c)
3
d)
4
21.
The boiling points and viscosity of alkane molecules increase as their molecular sizes increase.
a)
True
b)
False
22.
General formula of Alkane is 
a)
CnH2n+2
b)
CnH2n
c)
CnH2n+1OH
d)
CnH2n+1COOH
23.

What is a polymer?

a)

a very light material that is highly flammable

b)

a fossil fuel

c)

a large molecule made from many monomers joined together

d)

a molecule made up of only polar bonds

24.

What is Polyethene made from?

a)

Ethene

b)

Ethane

c)

Propane

d)

Propene

25.

What is addition polymerization?

a)

When monomers are added together to form a polymer

b)

When polymers link with eachother to form megapolymers

c)

When a polymer is heated and bonds between monomers break

d)

When a polymer does things polymers do

26.

What is produced during COMPLETE combustion of a hydrocarbon?

a)

carbon monoxide

b)

carbon dioxide and water

c)

water and UV radiation

d)

methane

27.

What is the partial structure of the polymer formed by the polymerisation of propene, CH3CH=CH2?

a)
b)
c)
d)
28.

What would the polymer formed from ethene monomers be called?

a)

polyethene

b)

poly(ethene)

c)

poly(propene)

d)

polyene

29.

Which one of these monomers would form poly(1,2-difluoroethene)?

a)
b)
30.
How many double bonds in the compound?
a)
1
b)
6
c)
12
d)
5
31.
Is this hydrocarbon saturated or unsaturated? 
a)
saturated
b)
unsaturated
32.
What is the general formula of an alkene
a)
2n+2
b)
CnH2n+2
c)
CnH2n
d)
CnHn
33.
What is the AQA definition of saturated?
a)
No single bonds
b)
Contains Carbon-Carbon double bond
c)
All Carbon-Carbon bonds are double 
d)
All Carbon-Carbon bonds are single
34.
What are the products of complete combustion?
a)
SO2 + H2O
b)
H2O
c)
CO
d)
CO + H2O
e)
CO2 + H2O
35.
What is the process of breaking down a long hydrocarbon into smaller hydrocarbons
a)
Cracking
b)
Fracking
c)
Combustion
d)
Oxidation
e)
Distillation
36.
What are the products of cracking?
a)
Bromine water
b)
Short alkanes and alkenes
c)
Branched alkenes
d)
Polymers
e)
Alkanes only
37.
How do you test for an alkene?
a)
React it with oxygen
b)
React it with litmus paper
c)
React it with bromine water
d)
pH test
38.
What does an alkene have that an alkane does not?
a)
Electrons
b)
Less reactive
c)
Oxygen
d)
Double C=C bond
e)
Single C-C bond
39.
A hydrocarbon that contains a double bonds is also known as…?
a)
Alkane
b)
Wet
c)
Unsaturated
d)
Saturated
40.

What are the first 3 alkenes in increasing carbon chain length?

a)

Methene, ethene, propene

b)

Ethene, propene, pentene

c)

Ethene, propene, butene

d)

Butene, ethene, propene

e)

Methene, ethene, propane

41.

What conditions are necessary in the reaction of alkenes with hydrogen?

a)

300°C, Iron catalyst

b)

60°C, Nickel catalyst

c)

600°C, High pressure

d)

Low temperature, Nickel catalyst

e)

600°C, High temperature

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