heating curve and phase diagrams

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

• A-B only

• A-B, C-D, and E-F

• B-C only

• B-C and D-E

The melting point of the sample is

• -60 ºC

• 20 ºC

• 60 ºC

• 100 ºC

In which region(s) does temperature increase?

• Region C only

• Regions B and D

• Regions A, C, and E

• Regions A and B

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

Describe the substance at letter A.

• Solid

• Liquid

• Melting

• Evaporating

At which letter is the substance changing its state of matter?

• A only

• A, C, and E

• D and E

• B and D

Describe the substance at letters D.

• Gas

• Liquid

• Melting

• Evaporating

At higher temperatures

• particles in an object have less energy
• particles in an object move faster
• a gas contracts

From point A to point E, the sample is going through an

• exothermic process by releasing heat to the surroundings

• exothermic process by absorbing heat from the surroundings

• endothermic process by releasing heat to the surroundings

• endothermic process by absorbing heat from the surroundings

WHAT STATE OF MATTER IS C?

• SOLID

• LIQUID

• GAS

• SUPER FLUID