Topic 8 Fuels and Earth science

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

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

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

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

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

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

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

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

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

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

11 Name the two elements found in hydrocarbons.

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

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

14 Name the main hydrocarbon found in natural gas.

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

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

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

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

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

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

21 Give one typical use of fuel oil.

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

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

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