4.5 Phase Change Final Assessment

Solid, Liquid, Gas.

The molecules move in place and are closely packed together.

The molecules move faster and start moving away from each other.

The energy that an object has due to its motion.

As temperature increases, molecules move faster; as temperature decreases, they move slower.

A transition of matter from one state to another, such as solid to liquid or liquid to gas.

A solid absorbs heat and changes into a liquid.

A liquid loses heat and changes into a solid.

A gas loses heat and changes into a liquid.

A liquid absorbs heat and changes into a gas.