States of Matter and Phase Changes

Front

What is the process of freezing?

Back

Freezing is the process in which a liquid loses thermal energy and changes into a solid.

Tags

NGSS.MS-PS1-4

Front

Why does ice float on water?

Back

Ice floats on water because it is less dense than water.

Front

What is the relationship between thermal energy and state changes?

Back

To change the state of matter, you need to increase or decrease the thermal energy (heat).

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Front

Which state of matter has particles that are moving the slowest?

Back

Solid.

Tags

NGSS.MS-PS1-4

Front

What happens to particle motion when ice melts in a warm room?

Back

Particles speed up and the ice becomes a liquid.

Tags

NGSS.MS-PS1-4

Front

Define the term 'solid'.

Back

A solid is a state of matter characterized by fixed shape and volume, with particles that are closely packed together.

Tags

NGSS.MS-PS1-4

Front

Define the term 'liquid'.

Back

A liquid is a state of matter that has a definite volume but takes the shape of its container, with particles that are close together but can move past one another.

Front

Define the term 'gas'.

Back

A gas is a state of matter that has no definite shape or volume, with particles that are far apart and move freely.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Front

What is sublimation?

Back

Sublimation is the process in which a solid changes directly into a gas without passing through the liquid state.

Tags

NGSS.MS-PS1-4

Front

What is condensation?

Back

Condensation is the process in which a gas loses thermal energy and changes into a liquid.

Tags

NGSS.MS-ESS2-4

NGSS.MS-PS1-4