Fossil fuels such as gas, oil, and coal have what kind of energy? Question 3 options:

Mechanical energy

Chemical energy

Electrical energy

Nuclear energy

What is a main difference between a mixture and a pure substance? a mixture is only a liquid, but a pure substance can be in any state.a mixture looks the same throughout, but a pure substance does not.1 a mixture can vary in composition, but a pure substance has a set composlo a mixture can be made up of a single compound, but a pure substance car