Thermal Energy and Matter

Front

What is thermal energy?

Back

Thermal energy is the total kinetic energy of the particles in a substance, which is related to its temperature.

Front

What is the process called when a solid turns into a liquid?

Back

Melting.

Front

What is the process called when a gas turns into a liquid?

Back

Condensation.

Front

What is the process called when a liquid turns into a gas?

Back

Evaporation.

Front

What is sublimation?

Back

Sublimation is the process where a solid turns directly into a gas without becoming a liquid first.

Front

What are the three states of matter?

Back

Solid, liquid, and gas.

Front

What is a characteristic of solids?

Back

Solids have a definite shape and volume.

Front

What is a characteristic of liquids?

Back

Liquids have a definite volume but take the shape of their container.

Front

What is a characteristic of gases?

Back

Gases have no definite shape or volume and expand to fill their container.

Front

What happens to particles in a substance when it is heated?

Back

The particles move faster and spread apart, increasing the thermal energy.