Amplify Phase Change Review

Front

What is a phase change?

Back

A phase change is a transition of matter from one state (solid, liquid, gas) to another due to changes in energy and temperature.

Front

What happens to molecules during a phase change?

Back

Molecules either gain or lose kinetic energy, which affects their movement and the forces between them.

Front

What is kinetic energy?

Back

Kinetic energy is the energy an object has due to its motion. In the context of phase changes, it refers to the energy of molecules.

Front

What is the difference between strong and weak molecular attraction?

Back

Strong molecular attraction means molecules are closely held together, while weak attraction allows molecules to move more freely.

Front

What phase change occurs when a gas turns into a liquid?

Back

Condensation.

Front

What phase change occurs when a liquid turns into a gas?

Back

Evaporation.

Front

What is melting?

Back

Melting is the phase change from solid to liquid when a substance absorbs heat.

Front

What is freezing?

Back

Freezing is the phase change from liquid to solid when a substance loses heat.

Front

What happens to the molecules of a substance when it absorbs heat?

Back

The molecules gain kinetic energy, move faster, and may change from solid to liquid or liquid to gas.

Front

What happens to the molecules of a substance when it loses heat?

Back

The molecules lose kinetic energy, move slower, and may change from gas to liquid or liquid to solid.