C1.4 Crude Oil Flashcards Preview

GCSE Chemistry AQA > C1.4 Crude Oil > Flashcards

Flashcards in C1.4 Crude Oil Deck (38):
1

What is methane a hydrocarbon?

Because it contains carbon and hydrogen only

2

What is methane a hydrocarbon?

Because it contains carbon and hydrogen only

3

What is an alkane

A saturated hydrocarbon (with single bonds only)

4

What is an alkene?

An unsaturated hydrocarbon (contains double bonds)

5

What is a fraction?

A mixture of hydrocarbons with a similar chain length

6

Describe the key steps of fractional distillation

Crude oil is vaporised
The different fractions condense at their different boiling points
Smaller fractions condense at the top of the column and larger fractions condense at the bottom of the column.

7

What is the general formula for alkanes

CnH2n+2

8

Write a word equation for the combustion of ethane

ethane + oxygen --> carbon dioxide + water

9

What does the term 'oxidise' mean

If something gains oxygen
If something loses electrons

10

What conditions are needed for carbon monoxide to form when a fuel burns

Incomplete combustion - not enough oxygen

11

Write an equation for the formation of sulphur dioxide from sulphur

sulphur + oxygen --> sulphur dioxide

12

Why do some fuels produce sulphur dioxide when they are burnt?

They contain some sulphur

13

Name an environmental effect of burning fuels containing sulphur

They produce sulphur dioxide
Which causes acid rain
Which kills plants and animals

14

Name an environmental impact of carbon dioxide

Global warming
raises global temperature/melting polar icecaps

15

What is the chemical formula of ethane

C2H6

16

What is the name of an alkane with 5 carbons?

Pentane

17

What are the environmental problems caused by carbon particulates

Global dimming

18

Name an advantage and disadvantage of using bioethanol as an alternative fuel

Advantage - 'carbon neutral', it's renewable as more plants can be grown
Disadvantage - takes large amount of land and uses crops that could be used for food. This could raise food prices.

19

Name an advantage and disadvantage of using hydrogen as an alternative fuel

Advantage - only product is water. Comes from water and is renewable.
Disadvantage - Takes a lot of energy for the electrolysis of water. Hydrogen is hard to store as it's explosive.

20

Give the formula of an alkane with 23 carbons

C23H48

21

What is an alkane

A saturated hydrocarbon (with single bonds only)

22

What is an alkene?

An unsaturated hydrocarbon (contains double bonds)

23

What is a fraction?

A mixture of hydrocarbons with a similar chain length

24

Describe the key steps of fractional distillation

Crude oil is vaporised
The different fractions condense at their different boiling points
Smaller fractions condense at the top of the column and larger fractions condense at the bottom of the column.

25

What is the general formula for alkanes

CnH2n+2

26

Write a word equation for the combustion of ethane

ethane + oxygen --> carbon dioxide + water

27

What does the term 'oxidise' mean

If something gains oxygen
If something loses electrons

28

What conditions are needed for carbon monoxide to form when a fuel burns

Incomplete combustion - not enough oxygen

29

Write an equation for the formation of sulphur dioxide from sulphur

sulphur + oxygen --> sulphur dioxide

30

Why do some fuels produce sulphur dioxide when they are burnt?

They contain some sulphur

31

Name an environmental effect of burning fuels containing sulphur

They produce sulphur dioxide
Which causes acid rain
Which kills plants and animals

32

Name an environmental impact of carbon dioxide

Global warming
raises global temperature/melting polar icecaps

33

What is the chemical formula of ethane

C2H6

34

What is the name of an alkane with 5 carbons?

Pentane

35

What are the environmental problems caused by carbon particulates

Global dimming

36

Name an advantage and disadvantage of using bioethanol as an alternative fuel

Advantage - 'carbon neutral', it's renewable as more plants can be grown
Disadvantage - takes large amount of land and uses crops that could be used for food. This could raise food prices.

37

Name an advantage and disadvantage of using hydrogen as an alternative fuel

Advantage - only product is water. Comes from water and is renewable.
Disadvantage - Takes a lot of energy for the electrolysis of water. Hydrogen is hard to store as it's explosive.

38

Give the formula of an alkane with 23 carbons

C23H48