Phase Changes, Phase Diagrams and Temperature Scales

What is happening at letter D?

• Evaporation of a liquid

• Condensation of a gas

• Boiling of a liquid

• The answer depends on if there is thermal energy being added or removed

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

NGSS.MS-PS3-4

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 call......

• fusion

• Freezing

• sublimation

• evaporation

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

All changes in the state of matter of a substance requires

• vibration

• water

• permission

• energy

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The slower molecules move, 

• the higher the temperature

• the less temperature

• the same temperature

• I don't know

Tags

NGSS.MS-PS1-4

True or false: melting and freezing occur at the same temperature

• True

• False

• I don't know

Tags

NGSS.MS-PS1-4

A substance's heating curve is shown in the graph. What is its boiling point? (Diagram B)

• 100 C

• 60 C

• 80 C

• 20 C

Tags

NGSS.MS-PS1-4

Moving left to right across the diagram, are the particles moving faster or slower as time goes on? (Diagram F)

• Faster

• Slower

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4