Combustion

Question 1

What is a hydrocarbon?

Answer 1

A molecule/compound which contains only the elements carbon and hydrogen chemically bonded together

Question 2

Can hydrocarbons have a different number of carbon atoms?

Answer 2

Yes

Question 3

What is one of the main sources of hydrocarbons and what is it a mixture of?

Answer 3

Crude oil: is a mixture of different hydrocarbons and small amounts of other substances

Question 4

What are some uses for hydrocarbons?

Answer 4

Fuels, materials for the production of plastics etc

Question 5

What is combustion?

Answer 5

A type of chemical reaction between hydrocarbons and oxygen

Question 6

What are the conditions required for combustion to occur?

Answer 6

There must be fuel to burn, air to supply oxygen and heat to start and continue the combustion process.

Question 7

What does the combustion of a hydrocarbon in a plentiful supply of oxygen produce?

Answer 7

Carbon dioxide and water only

Question 8

How do you test for water?

Answer 8

Put the substance in a sample of copper sulphate. If it turns blue, water is present

Question 9

How do you test for carbon dioxide?

Answer 9

Bubble the solution through limewater, if the limewater turns milky or cloudy white, carbon dioxide is present