Phase Changes and Heating Curves

In which region(s) does temperature increase?

• Region C only

• Regions B and D

• Regions A, C, and E

• Regions A and B

Tags

NGSS.MS-PS1-4

In which region(s) of the heating curve would water be a liquid and a gas at the same time?

• A

• B

• C

• D

• E

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NaCl was heated starting at an initial temperature of 0°C. The heating curve is shown in the picture. What is the melting point of this substance?

• 0°C

• 801°C

• 1000°C

• 1465°C

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

What is the phase change of a solid to a liquid?

• freezing

• melting

• boiling

• condensation

Tags

NGSS.MS-PS1-4

What is it called when a solid turns directly into a gas?

• Sublimation

• Condensation

• Liquid

Tags

NGSS.MS-PS1-4

7. All phase changes (changing states) requires energy to be added or taken away.

• True

• False

Tags

NGSS.MS-PS1-4

Change from gas to liquid...

• condensation

• evaporation

• expansion

• movement

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Change from Liquid to Solid is called ...

• fusion

• Freezing

• sublimation

• evaporation

Tags

NGSS.MS-PS1-4

Change from liquid to gas is called....

• expansion

• evaporation

• condensation

• sublimation

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What happens to particles when energy is added (heated)?

• They speed up and spread out

• They slow down and compress

• They stop moving

• They move closer together and speed up

Tags

NGSS.MS-PS1-4