Topic 8 Fuels and Earth science Flashcards Preview

Edexcel GCSE Combined Science (Chemistry) HIGHER > Topic 8 Fuels and Earth science > Flashcards

Flashcards in Topic 8 Fuels and Earth science Deck (100)
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1

1 What are the chemical symbols for the elements carbon and hydrogen?

C; H

2

2 What type of bond (ionic, metallic or covalent) is found in simple molecules?

covalent

3

3 What state (solid, liquid or gas) is crude oil at room temperature?

liquid

4

4 How many shared electrons are there in a covalent bond?

two

5

5 Which element forms long chains in simple polymers such as polyethene

carbon

6

6 Which type of compound only contains hydrogen and carbon atoms?

hydrocarbon

7

7 Are ‘petrochemicals’ made from petrol, rock or crude oil?

crude oil

8

8 How many years hundreds, thousands or millions) does it take for crude oil to form?

millions

9

9 If something is not being made any more, is it described as ‘finite’ or as ‘non-renewable’?

finite

10

10 About how many litres of crude oil does the world use each second 180, 1800 or 180 000)?

180 000

11

11 Name the two elements found in hydrocarbons.

carbon; hydrogen

12

12 Crude oil is forming extremely slowly. Does this make it a finite resource or a non-renewable one?

finite

13

13 Petrol comes from crude oil. Give one use for petrol.

fuel for cars

14

14 Name the main hydrocarbon found in natural gas.

methane

15

15 Diesel oil is being used up faster than crude oil forms. Does this make it a finite resource or a non-renewable one?

non-renewable

16

16 Name the polymer formed from ethene, which comes from crude oil.

polyethene

17

17 Name the state change that occurs when a gas becomes a liquid.

condensing/condensation

18

18 What bonds or forces exist between molecules ionic, covalent or intermolecular)?

intermolecular forces

19

19 Compared with metals, do simple molecules typically have high boiling points or low ones?

low

20

20 Name the method used to separate a mixture of two or more liquids with different boiling points.

fractional distillation

21

21 Give one typical use of fuel oil.

fuel for large ships/fuel for some power stations

22

22 Crude oil is a source of feedstock. Give one other type of useful substance from crude oil.

fuels

23

23 Is crude oil described as a finite resource or an infinite resource?

finite

24

24 Name a non-renewable fossil fuel obtained from crude oil.

petrol/kerosene/diesel oil/fuel oil

25

25 Name the main non-renewable fossil fuel in natural gas.

methane

26

26 What process is used to separate crude oil into useful mixtures?

fractional distillation

27

27 Give one use for the gases fraction from crude oil.

domestic heating/cooking

28

28 Which fraction is more easily ignited, bitumen or kerosene?

kerosene

29

29 Which fraction is more viscous, bitumen or kerosene?

bitumen

30

30 Which hydrocarbons have the greater boiling points, the ones with larger molecules or the ones with smaller molecules?

larger molecules