Phase Changes and Phase Change Diagrams

Front

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

Back

Energy is either added or removed during a phase change.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Front

What is the phase change from liquid to gas called?

Back

Vaporization.

Tags

NGSS.MS-PS1-4

Front

What is the phase change from gas to liquid called?

Back

Condensation.

Tags

NGSS.MS-PS1-4

Front

What is the phase change from solid to liquid called?

Back

Melting.

Tags

NGSS.MS-PS1-4

Front

What is the phase change from liquid to solid called?

Back

Freezing.

Tags

NGSS.MS-PS3-4

Front

How does temperature relate to the movement of molecules in a substance?

Back

As temperature decreases, the movement of molecules slows down.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Front

What is a phase change diagram?

Back

A graphical representation that shows the states of a substance at different temperatures and pressures.

Tags

NGSS.MS-PS1-4

Front

What does the horizontal line on a phase change diagram represent?

Back

A phase change occurring at constant temperature.

Front

What is the significance of the letters A, B, C, and D on a phase change diagram?

Back

They represent different phases or phase changes of the substance.

Tags

NGSS.MS-PS1-4

Front

What is the relationship between pressure and phase changes?

Back

Changes in pressure can affect the temperature at which phase changes occur.