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Reactions of Alkenes 1

Total questions: 18

Worksheet time: 27mins

Name
Class
Date
1.

What Alkene is C4H8?

a)

Propene

b)

Pentene

c)

Butene

d)

Ethene

2.

Which is the alkene?

a)

A

b)

B

3.

What two things happen during an addition reaction in terms of bonding?

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.

4.

What type of reaction is shown?

a)

Polymerisation

b)

Bromination

c)

Hydrogenation

d)

Hydration

5.

What type of reaction is shown?

a)

Polymerisation

b)

Hydrogenation

c)

Hydration

d)

Bromination

6.

What type of reaction is shown?

a)

Polymerisation

b)

Hydration

c)

Hydrogenation

d)

Bromination

7.

Bromine water is used to test for Alkenes. What happens to the Bromine water when an Alkene is added?

4 lines
8.

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

a)

There is reaction taking place.

b)

There is no reaction taking place.

9.

Which of the following undergoes addition reactions?

a)
alkanes
b)
alkanes and alkenes
c)
alkanes and alkynes
d)
alkenes
10.

If an alkene reacts with a halogen, it is known as what type of reaction?

a)

Addition

b)

Combustion

c)

Polymerisation

d)

Hydrogenation

11.
Both alkanes and alkenes react rapidly with aqueous bromine at room temperature.
a)
True
b)
False
12.

What is the major product formed for this reaction.

a)
b)
c)
d)
13.

What would you make if you added Hydrogen to Ethene?

a)

Ethane

b)

Propane

c)

1,2 - dihydroethane

d)

Ethanol

14.

What is meant by a saturated hydrocarbon?

a)

Contains at least one carbon to carbon double bond

b)

Contains only single covalent bonds between the carbon atoms

c)

Contains mostly single covalent bonds between the carbon atoms

d)

Contains a double covalent bond between the carbon atoms

15.

What is meant by an unsaturated hydrocarbon?

a)

Contain at least one carbon to carbon double bond or a carbon to carbon triple bond

b)

Contain only carbon to carbon double bonds

c)

Contain only carbon to carbon single bonds

d)

Contain at least two carbon to carbon double bond or a carbon to carbon triple bond

16.

What name is given to the reaction when you add chlorine across a double bond?

a)

hydration

b)

addition

c)

hydrogenation

d)

polymerisation

17.

What product is formed when you react hydrogen with 3-pentene or pent-3-ene?

a)

cyclopentane

b)

hex-3-ene

c)

pent-1-ene

d)

pentane

18.

Which of these hydrocarbons would react with bromine water?

a)

pentane

b)

cyclopropane

c)

ethene

d)

ethane