Melting and Freezing

At what temperature in degrees Celcius does water freeze?

• 150

• 200

• 0

• 32

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which choice defines the freezing point?

• The temperature at which a substance changes its state from a liquid to a gas

• The temperature at which a substance changes its state from a solid to a liquid

• The temperature at which a substance changes its state from a liquid to a solid

• The temperature at which a substance changes its state from a gas to a liquid

Tags

NGSS.MS-PS1-4

The temperature at which a substance changes its state from a solid to a liquid is...

• Freezing point

• Melting point

• Evaporation

• Condensation

Tags

NGSS.MS-PS1-4

What is this picture showing?

• Melting

• Freezing

• Condensation

• All of the above

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Look at this picture. Can this melt?

• Yes

• No

• Maybe

• Never

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

In a solid, the particles are...

• Far apart

• Close together

• There are no particles in a solid

• All of the above

A phase change occurs when _________ __________ is added or taken away from a substance. (transfered)

• chemical energy

• light energy

• heat energy

• no energy

Tags

NGSS.MS-PS1-4

What happens to particle movement when heat energy is added to a phase?

• particles slow down

• particles stay still

• particles speed up

• there are no particles

Tags

NGSS.MS-PS1-4

Which phase changes occur when heat energy is ADDED?

• freezing, melting

• freezing, condensation

• condensation, evaporation

• melting, evaporation

Tags

NGSS.MS-PS1-4

What is an example of melting?

• Water turning into ice

• chocolate bar turning into liquid chocolate

• fog forming on a mirror

• water boiling

Tags

NGSS.MS-PS1-4