Latent heat

Select the state changes that latent heat of fusion applies to.

• melting

• evaporating

• freezing

• condensing

• sublimation

Tags

NGSS.MS-PS1-4

Select the state changes that latent heat of vaporisation applies to.

• melting

• evaporating

• freezing

• condensing

• sublimation

Tags

NGSS.MS-PS1-4

The diagram shows a heating curve for ice. Which line represents the ice melting?

• A

• B

• C

• D

• E

Tags

NGSS.MS-PS1-4

Why are lines B and D flat?

• The ice is melting

• The ice is freezing

• All of the thermal energy is used to break the bonds

• They stopped the stopwatch

• They stopped heating the ice.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The diagram shows a heating curve for ice. Which line represents the ice in a liquid state (water)?

• A

• B

• C

• D

• E

Tags

NGSS.MS-PS1-4

The diagram shows a cooling curve for ice. Which line represents the ice in a liquid state (water)?

• A

• B

• C

• D

• E

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Water molecules have the greatest kinetic energy in

• Ice at 0 ⁰C

• Water at 90 ⁰C

• Water at 373 K

• Steam at 150 ⁰C

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What unit do you use to measure Thermal Energy?

• J/Kg ºC
• Kg
• ºC
• J

Tags

NGSS.HS-PS3-4

It's the measure of hotness or coldness expressed in terms of any of several arbitrary scales.

• Heat

• Specific heat

• Latent heat

• Temperature

Which PHASE CHANGE requires the greatest amount of energy to be absorbed by a water molecule?

• Melting

• Evaporation

• Sublimation

• Deposition