Phase Change

Front

What is a phase change?

Back

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

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Front

What happens to molecules during melting?

Back

During melting, molecules gain energy, move faster, and become less tightly packed, transitioning from solid to liquid.

Tags

NGSS.MS-PS1-4

Front

What is condensation?

Back

Condensation is the phase change from gas to liquid, where molecules lose energy and come closer together.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Front

How does temperature affect molecular movement?

Back

As temperature increases, molecular movement increases; as temperature decreases, molecular movement decreases.

Tags

NGSS.MS-PS1-4

Front

What is evaporation?

Back

Evaporation is the phase change from liquid to gas, occurring when molecules gain enough energy to break free from the liquid.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Front

What occurs during freezing?

Back

During freezing, molecules lose energy, move slower, and become more tightly packed, transitioning from liquid to solid.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Front

What is kinetic energy?

Back

Kinetic energy is the energy of motion; in the context of molecules, it refers to how fast they are moving.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Front

What happens to molecules when they are heated?

Back

When molecules are heated, they gain kinetic energy, move faster, and may change phase from solid to liquid or liquid to gas.

Tags

NGSS.MS-PS1-4

Front

What is the arrangement of molecules in a solid?

Back

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

Front

What is the arrangement of molecules in a gas?

Back

In a gas, molecules are far apart, move freely, and have no fixed arrangement.