Burning Fuels

Question 1

What is a fuel?

Answer 1

A fuel is material that burns to transfer energy by heating

Fuels are essential for various energy applications.

Question 2

List examples of fuels.

Answer 2

• Petrol
• Diesel
• Coal
• Hydrogen
• Waste cooking oil

These fuels vary in their sources and environmental impact.

Question 3

What is combustion?

Answer 3

Combustion is the process in which fuels burn in chemical reactions

This process typically produces heat and light.

Question 4

Provide an example of a combustion reaction.

Answer 4

Methane + oxygen → carbon dioxide + water

This reaction illustrates the conversion of fuel into energy.

Question 5

What are fossil fuels?

Answer 5

Fossil fuels are petrol, diesel, coal, and methane that come from under the ground or sea

These fuels are formed from ancient organic matter.

Question 6

Why are some cars beginning to use hydrogen as fuel?

Answer 6

Because hydrogen only releases water when burned, which is less harmful to the environment than carbon dioxide

This shift aims to reduce pollution and greenhouse gas emissions.

Question 7

What is oxidation?

Answer 7

Oxidation reactions are reactions where the substances react with oxygen

Oxidation is a fundamental concept in chemistry related to energy transfer.