Cooling Curves

Between which points is the temperature of the substance remaining constant?

• A-B only. 

• A-B, C-D, E-F

• B-C only. 

• B-C, D-E

Tags

NGSS.MS-PS1-4

Between which points is the substance changing its state of matter?

• A-B only. 

• A-B, C-D, E-F

• B-C only. 

• B-C, D-E

Tags

NGSS.MS-PS1-4

Describe the substance between letters C and D. 

• Gas

• Liquid

• Melting

• Evaporating

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

As matter cools what happens to the intermolecular forces?

• they strengthen

• they weaken

• they reverse

Tags

NGSS.MS-PS1-4

If a state changes from Liquid to Solid what has occurred?

• Melted

• Froze

• Evaporated

• Condensed

Tags

NGSS.MS-PS1-4

If a state has changed from Gas to Liquid what has occurred?

• Melted

• Froze

• Evaporated

• Condensed

Tags

NGSS.MS-PS1-4

The following image shows the temperature change of a substance as thermal energy is released over time. Select all regions where the substance exists in a single phase of matter (NOT where a phase is changing)

• AB

• BC

• CD

• DE

• E to the end

Tags

NGSS.MS-PS1-4

This cooling curve shows the freezing of a substance. The starting phase at AB is ​ (a)   . Region BC shows​ (b)   . From C to the end, the substance is ​ (c)   . The melting point of this substance is​ (d)   °C

• a liquid

• freezing

• a solid

• a gas

• condensing

• melting

• 150

• 200

• 110

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Select 3 terms that represent PHASE CHANGES that can happen if a sample of matter releases thermal energy

• condensing

• sublimation

• evaporation

• deposition

• freezing

Tags

NGSS.MS-PS1-4

What is a cooling curve?

• A graph showing the change in temperature of a substance over time as it cools

• A graph showing the change in pressure of a substance over time as it cools

• A graph showing the change in volume of a substance over time as it cools

• A graph showing the change in mass of a substance over time as it cools

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4