heating and cooling curves

Is this substance being heated or cooled?

• heated

• cooled

How many states of matter are represented here?

• 1

• 2

• 3

• 4

How many changes of state are represented here?

• 1

• 2

• 3

• 4

What letter represents the melting point of this substance?

• A

• B

• C

• D

During what segments does it show a temperature increase? Select all that apply.

• A

• B

• C

• D

• E

The substance is all liquid at what point?

• A

• B

• C

• D

• E

The substance is all gas at what point?

• A

• B

• C

• D

• E

The substance is all solid at what point?

• A

• B

• C

• D

• E

The substance is both liquid and gas at what point?

• A

• B

• C

• D

• E

The substance is both solid and turning into a liquid at what point?

• A

• B

• C

• D

• E