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 to liquid or liquid to gas.

Tags

NGSS.MS-PS1-4

Front

What are the three main states of matter?

Back

The three main states of matter are solid, liquid, and gas.

Front

How do molecules behave in a solid?

Back

In a solid, molecules are closely packed together and vibrate in place.

Front

How do molecules behave in a liquid?

Back

In a liquid, molecules are close together but can move around each other.

Front

How do molecules behave in a gas?

Back

In a gas, molecules are far apart and move freely and quickly.

Front

What happens to molecules during melting?

Back

During melting, the molecules gain energy, move faster, and break free from their fixed positions.

Tags

NGSS.MS-PS1-4

Front

What happens to molecules during freezing?

Back

During freezing, the molecules lose energy, move slower, and become fixed in place.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

Front

What happens to molecules during evaporation?

Back

During evaporation, the molecules gain enough energy to overcome attractions and move into the gas phase.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

Front

What happens to molecules during condensation?

Back

During condensation, gas molecules lose energy and come closer together to form a liquid.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Front

What is the effect of temperature on phase changes?

Back

Temperature affects the energy of molecules; higher temperatures can lead to melting and evaporation, while lower temperatures can lead to freezing and condensation.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4