Topic 2.1 Fuels

Question 0

Examples of fuels

Answer 0

Petrol 
Coal
Oil
Ethanol
Wood
Natural gas

Question 1

What is a fuel?

Answer 1

Is a chemical that burns to release energy

Question 2

How is coal formed?

Answer 2

Millions of years ago plants died and fell to the bottom of swamps. Over time layers of earth fell on top of the plants which rotted in the absence of oxygen. The pressure of the earth compressed the plants turning it into peat then coal

Question 3

How is crude oil formed?

Answer 3

Millions of years ago plankton died and fell to the bottom of the sea. Over time layers of earth fell on top of the plants which rotted in the absence of oxygen. The pressure of the earth compressed the plants turning it into crude oil and natural gas

Question 4

What is a hydrocarbon

Answer 4

A substance which contains hydrogen and carbon only

Question 5

What is produced in complete combustion

Answer 5

Carbon dioxide and water

Question 6

What is produced in incomplete combustion

Answer 6

Carbon monoxide and water

Question 7

What is the test for carbon dioxide

Answer 7

Turns lime water cloudy

Question 8

What is a fossil fuel?

Answer 8

One that has been formed from the living things alive millions of years ago