Unit: 3 - fuels

Question 1

What is a fuel?

Answer 1

A fuel is a compound that will release energy when burned

Question 2

What do exothermic chemical reactions do?

Answer 2

Exothermic chemical reactions give out energy

Question 3

What do Endothermic chemical reactions do?

Answer 3

Endothermic chemical reactions take in energy.

Question 4

What is combustion?

Answer 4

Combustion is the reaction of burning a fuel in oxygen

Question 5

what chemical reaction is combustion an example of?

Answer 5

Combustion is an example of an exothermic reaction.

Question 6

What is crude oil?

Answer 6

Crude oil is a mixture of hydrocarbons

Question 7

What is a hydrocarbon?

Answer 7

Hydrocarbons are substances that contain hydrogen and carbon only.

Question 8

What do hydrocarbons produce when burn in oxygen?

Answer 8

Hydrocarbons burn in a plentiful supply of oxygen to produce carbon dioxide and water.

Question 9

What is produced when hydrocarbons are burned in a limited supply of oxygen?

Answer 9

Carbon monoxide, a poisonous gas, and carbon are produced when hydrocarbons burn in a limited supply of oxygen