Phase Change Graph and KMT

Between what two points is the most energy being added to the system

• A -B
• B-C
• C-D
• D-E

Tags

NGSS.HS-PS3-4

Which line segment demonstrates vaporization occurring?

• B-C
• C-D
• D-E
• E-F

Tags

NGSS.HS-PS1-5

NGSS.HS-PS3-4

What phase change is occurring at line segment B-C if the graph is exothermic?

• melting
• freezing
• boiling
• condensation

As substance goes from D to E what happens to the distance between the particles?

• particles get closer together
• particles disappear
• particles get far apart

Tags

NGSS.MS-PS1-4

At what temperature is this substance melting?

• 50C
• 100C
• 0C

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

At point temperature does this substance finish melting?

• B
• C
• D
• E

The temperature at which a substance in the liquid state freezes is the same as the temperature at which the substance_________- 

• melts
• sublimes
• boils
• condenses

Tags

NGSS.MS-PS1-4

How long does it take this substance to change from a liquid to a gas?

• 1 minute
• 2 minutes
• 10 minutes
• 15 minutes

Tags

NGSS.HS-PS3-4

Which of the following terms identifies the change from a liquid to solid?

• Melting
• Condensation
• Vaporization
• Freezing

The diagram, above, shows the cooling curve of an unknown substance from its gas to solid phase. Which section corresponds to the boiling point of the substance?

• A to B

• C to D

• B to C

• D to E

Tags

NGSS.HS-PS3-2

NGSS.HS-PS3-4