Phase Change Assessment

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 the addition or removal of energy.

Front

What happens to the movement of molecules during freezing?

Back

During freezing, molecules lose energy, move slower, and come closer together, forming a solid.

Front

What happens to the movement of molecules during melting?

Back

During melting, molecules gain energy, move faster, and begin to slide past each other, forming a liquid.

Front

What is the state of matter where molecules are tightly packed and vibrate in place?

Back

Solid.

Front

What is the state of matter where molecules are close together but can move around each other?

Back

Liquid.

Front

What is the state of matter where molecules are far apart and move freely?

Back

Gas.

Front

What is evaporation?

Back

Evaporation is the process where liquid molecules gain enough energy to become gas.

Front

What is condensation?

Back

Condensation is the process where gas molecules lose energy and become liquid.

Front

What is sublimation?

Back

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

Front

What is deposition?

Back

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