Increased motion in the particles in a liquid allows the particles to

Arock can be broken down into different kinds of substances by physical processes. no chemical reactions are needed to separate different parts of a rock into pure substances. this is because a rock is a(n)

What are the major types of a chemical compound

How could a student test the effect of removing heat from a gas that is stored in a sealed container? what must occur in order for matter to change states?