Phase Change Critical Juncture

Front

What is a phase change?

Back

A phase change is the transformation of a substance from one state of matter to another, such as solid, liquid, or gas.

Tags

NGSS.MS-PS1-4

Front

What happens to molecules during a phase change from gas to liquid?

Back

The molecules lose energy, move closer together, and begin to move around each other.

Tags

NGSS.MS-PS1-4

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 free to 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 occurs when energy is added to a solid?

Back

The solid may melt and change into a liquid.

Tags

NGSS.MS-PS1-4

Front

What occurs when energy is removed from a gas?

Back

The gas may condense and change into a liquid.

Tags

NGSS.MS-PS1-4

Front

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

Back

Evaporation.

Tags

NGSS.MS-PS1-4

Front

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

Back

Condensation.

Front

What is the effect of temperature on the movement of molecules?

Back

As temperature increases, molecules move faster; as temperature decreases, molecules move slower.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4