What is in crude oil?

What are alkanes?

What is the general formula for alkanes?

How do we separate crude oil into fractions?

What are the stages of fractional distillation?

What makes a fraction useful as a fuel?

What are the products of combustion when we burn fuels in a good supply of air?

What happens if there are sulfur impurities in fuels?

What happens if we burn a fuel with insufficient oxygen?

What happens when nitrogen reacts with oxygen at high temperatures in engines?

Why is carbon dioxide called a greenhouse gas?

What are biofuels?

What can biodiesel be made from?

Why is Ethanol a biofuel?

Name a potential fuel for the future