TCi Lessons 23 & 24

Front

What is the total energy of all particles in an object called?

Back

Thermal Energy

Front

What process occurs when gas changes to a liquid?

Back

Condensation

Front

What does temperature measure in a substance?

Back

The average kinetic energy of the particles.

Front

What happens to molecules when heat is added to a substance?

Back

Energy moves into the substance causing the molecules to speed up.

Front

What is true about thermal energy transfer?

Back

Thermal energy will transfer from a warm object to a cold object.

Front

Define thermal energy.

Back

The total kinetic energy of all particles in a substance.

Front

What is the relationship between temperature and kinetic energy?

Back

Temperature is a measure of the average kinetic energy of particles in a substance.

Front

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

Back

Vaporization.

Front

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

Back

Melting.

Front

What happens during the process of freezing?

Back

A liquid turns into a solid as thermal energy is removed.