Phase Changes

Front

What happens to the temperature of a substance during a phase change?

Back

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

Front

Why do atoms in a solid still vibrate?

Back

All solids have some thermal energy.

Front

What is a phase change?

Back

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

Front

What is condensation?

Back

The process by which a gas turns into a liquid.

Front

What is sublimation?

Back

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

Front

What is deposition?

Back

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

Front

What is the difference between solids and gases in terms of particle movement?

Back

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

Front

What is thermal energy?

Back

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

Front

What is the state of matter for water at 0°C under normal atmospheric pressure?

Back

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

Front

What is the boiling point of water?

Back

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