Topic 2 Lesson 2

Front

Thermal energy

Back

The total kinetic and potential energy of all the particles in an object or substance.

Front

Temperature

Back

A measure of the average kinetic energy of the particles in an object or substance.

Front

Melting point

Back

A specific temperature when melting of a substance occurs.

Front

Freezing point

Back

The temperature at which a substance changes from a liquid to solid.

Front

Vaporization

Back

Change in state from a liquid to gas. Examples include boiling and evaporation.

Front

Boiling point

Back

The temperature at which a liquid boils.

Front

Evaporation

Back

Vaporization that takes place only on the surface of a liquid.

Front

Condensation

Back

Change in state from a gas to a liquid.

Front

Sublimation

Back

Particles of a solid turn into a gas without becoming a liquid first.