Melting and Freezing Point

At what temperature in degrees Celsius does water freeze?

• 150

• 0

• 200

• 32

Freezing point

• The classification of matter as a solid, a liquid, or a gas

• Physical change in matter from a gas to a liquid

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

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

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The temperature at which a substance changes states from a solid to a liquid

• Freezing point

• Melting point

• Evaporation

• Condensation

Tags

NGSS.MS-PS1-4

What is the picture showing?

• An ice cube melting

• Condensation

• Freezing

• All of the above

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

Can this melt?

• No

• Yes

• Maybe

• Never.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

what are the particles in a solid like?

• Far apart

• Wiggly and not close together

• Close together

• They don't have particles.

When energy is added or taken away from a substance it causes a:

• Chemical Reaction
• Phase Change
• Nothing Happens

Tags

NGSS.MS-PS1-4

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

• Particles slow down
• Particles go faster
• Particles don't move
• Particles stay the same speed

Tags

NGSS.MS-PS1-4

Which two phases changes add energy?

• Freezing, Melting
• Condensation, Evaporation
• Freezing, Condensation
• Melting, Evaporation

Tags

NGSS.MS-PS1-4

What is an example of melting?

• Water boiling
• Water turning into ice
• Chocolate bar turning into liquid chocolate
• Fog forming on a mirror

Tags

NGSS.MS-PS1-4