Phase Change Critical Juncture

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.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Front

What happens to molecules during a phase change when energy is added?

Back

When energy is added, molecules move faster and may overcome the forces holding them together, leading to a change in phase.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Front

What happens to molecules during a phase change when energy is removed?

Back

When energy is removed, molecules move slower and may come closer together, leading to a change in phase.

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.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Front

How do molecules behave in a solid?

Back

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

Tags

NGSS.MS-PS3-4

Front

How do molecules behave in a liquid?

Back

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

Tags

NGSS.MS-PS1-4

Front

How do molecules behave in a gas?

Back

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

Front

What is the effect of temperature on phase changes?

Back

Temperature affects the energy of molecules; higher temperatures can cause melting or evaporation, while lower temperatures can cause freezing or condensation.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Front

What is melting?

Back

Melting is the phase change from solid to liquid that occurs when a solid absorbs heat.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Front

What is freezing?

Back

Freezing is the phase change from liquid to solid that occurs when a liquid loses heat.

Tags

NGSS.MS-PS1-4