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crude oil

Total questions: 35

Worksheet time: 17mins

Name
Class
Date
1.

Crude oil is made up of:

a)

Ethane

b)

Butane

c)

A mixture of different hydrocarbons

d)

Extremely large hydrocarbons which are broken up once extracted

2.

A fraction of crude oil is made up of:

a)

Hydrocarbons of similar chain lengths

b)

Numbers

c)

Large hydrocarbons

d)

Alkenes only

3.

Different fractions in crude oil are separated by:

a)

Cracking

b)

Fractional Distillation

c)

Filtration

d)

Crystalisation

4.

Shorter hydrocarbons have:

a)

Higher boiling points

b)

Lower boiling points

5.

Bitumen is used for:

a)

Fuel for large ships and in some power stations

b)

Roof and road surfacing

c)

Fuel in aircraft

d)

Fuel in cars

6.

Fuel oil is used for:

a)

Fuel in some cars and larger vehicles

b)

Fuel for large ships and in some power stations

c)

Roof and road surfacing

d)

Fuel for cars

7.

Diesel oil is used for:

a)

Fuel in cars

b)

Fuel in aircraft

c)

Road and roof surfacing

d)

Fuel in some cars and larger vehicles

8.

Petrol is used for:

a)

Fuel in cars

b)

Fuel in aircraft

c)

Domestic heating and cooking

d)

Road surfacing

9.

Gases/LPG are used for:

a)

Fuel in cars

b)

Fuel for large ships

c)

Roof and road surfacing

d)

Domestic heating and cooking

10.

What is the structure shown?

a)

Methane

b)

Propane

c)

Ethane

d)

Butane

11.
Formed from dead marine organisms
a)
Oil and Natural Gas
b)
Coal
c)
Fossil Fuels
12.
Petroleum and natural gas form from...
a)
strong winds
b)
cooled magma
c)
radioactive materials
d)
remains of plants and animals 
13.
Crude oil is also called what?
a)
biomass
b)
fossils
c)
coal
d)
petroleum
14.

Where do long chain hydrocarbons collect?

a)

At the top

b)

In the middle

c)

At the bottom

15.

Where do short chain hydrocarbons collect?

a)

At the top

b)

In the middle

c)

At the bottom

16.

What does viscosity tell you about a hydrocarbon?

a)

How easy it is to ignite

b)

How runny it is

c)

What is boiling point is

17.

The shorter the hydrocarbon, the more viscous it is

a)

True

b)

False

18.

What process happens as the crude oil enters the fractionating column?

a)

Evaporation

b)

Condensation

c)

Combustion

19.

What process happens at each level in the fractionating column?

a)

Evaporation

b)

Condensation

c)

Combustion

20.

Alkenes have the general formula:

a)

CnH2n

b)

CnH2n+1

c)

CnH2n+2

d)

CnHn

21.

What term describes alkene molecules that contain a C=C double bond?

a)

saturated

b)

unsaturated

22.

What term is given to a compound which contains atoms of carbon and hydrogen only?

a)

alkene

b)

hydrocarbon

c)

alkane

d)

saturated

23.

Alkanes have the general formula:

a)

CnH2n

b)

CnH2n+1

c)

CnH2n+2

d)

CnHn

24.

What term describes alkane molecules that contain C-C single bonds?

a)

saturated

b)

unsaturated

25.

Where in the fractionating column are shorter chain hydrocarbon molecules obtained?

a)

At the top

b)

At the bottom

26.

Fractional distillation separates crude oil based on the different __________ of the molecules in the mixture

a)

melting point

b)

boiling point

c)

freezing point

d)

chemical reactivity

27.

Molecules collected at the bottom of the fractionating column tend to be...

a)

more viscous, less flammable and less volatile

b)

less viscous, more flammable and more volatile

c)

more viscous, more flammable and less volatile

d)

less viscous, less flammable and more volatile

28.

What are the 2 products of complete combustion?

a)

carbon dioxide + hydrogen

b)

carbon dioxide + water

c)

carbon monoxide + water

d)

carbon monoxide + hydrogen

29.

What are the products of incomplete combustion? (check all that apply)

a)

carbon monoxide

b)

water

c)

carbon

d)

hydrogen

30.

What is the term given to the process by which longer chain hydrocarbons are broken down into shorter length alkanes and alkenes?

a)

fractional distillation

b)

evaporation

c)

cracking

d)

polymerisation

31.

What conditions are needed for cracking?

a)

high temperature

b)

high pressure

c)

catalyst

d)

low temperature

32.

Name the following hydrocarbon

a)

alkane

b)

pentene

c)

pentane

d)

alkene

33.

Name the following hydrocarbon

a)

butane

b)

hexane

c)

heptane

d)

hexene

34.

C10H22 --> C5H12 + C3H6 + ?

a)

C2H4

b)

C3H4

c)

CO2

d)

CH4

35.

When testing for alkenes (unsaturation) bromine water turns from...

a)

orange --> blue/black

b)

colourless --> pink

c)

orange --> colourless

d)

orange --> clear

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