Phase Changes

The temperature of a substance does not change during a phase change.

All solids have some thermal energy.

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

The process by which a gas turns into a liquid.

The process by which a solid turns directly into a gas without becoming a liquid first.

The process by which a gas turns directly into a solid without becoming a liquid first.

Particles in a solid move more slowly than particles in a gas.

The energy that comes from the temperature of matter; it is the total energy of all the particles in an object.

Water can exist as both a solid (ice) and a liquid at 0°C.

The boiling point of water is 100°C at standard atmospheric pressure.