Front

What happens to particle motion when a gas is cooled to its condensation point?

Back

Particles move slower and come closer together.

Front

How does the motion of particles in a substance change as the temperature increases?

Back

Particles move faster.

Front

What is the state change called when a solid turns directly into a gas?

Back

Sublimation.

Front

What happens to particle motion when a liquid is cooled to its freezing point?

Back

Particles move slower and come closer together.

Front

What occurs to particle motion when thermal energy is removed from a gas?

Back

Particles move slower and come closer together.

Front

Define thermal energy.

Back

Thermal energy is the total kinetic energy of particles in a substance.

Front

What is condensation?

Back

Condensation is the process where gas turns into a liquid as it cools.

Front

What is the difference between melting and freezing?

Back

Melting is the process of a solid turning into a liquid, while freezing is a liquid turning into a solid.

Front

What is the effect of increasing thermal energy on particle motion?

Back

Increasing thermal energy causes particles to move faster.

Front

What is sublimation?

Back

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