Phase Change and Heating Curves

Front

What is the difference between heat and temperature?

Back

Heat does depend on the amount of substance, while temperature does not.

Front

What state of matter is represented at letter A in a heating curve?

Back

Solid

Front

What happens to particles of a substance when energy is added?

Back

They speed up and spread out.

Front

Between which points on a heating curve does the temperature remain constant?

Back

Between points B-C and D-E.

Front

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

Back

Sublimation.

Front

What is the phase change from solid to liquid called?

Back

Melting.

Front

What is the phase change from liquid to solid called?

Back

Freezing.

Front

What is the phase change from liquid to gas called?

Back

Vaporization.

Front

What is the phase change from gas to liquid called?

Back

Condensation.

Front

What happens to the temperature of a substance during a phase change?

Back

The temperature remains constant during a phase change.