Heating Curve Quiz

Which direction shows and increase in attractive forces?

• From point A to point F

• From point F to point A

• There is no increase.

The graph shows a cooling curve for an unknown substance.  What is happening during segment DE?

• boiling
• condensation
• freezing
• melting

What line segment represents only the solid state?

• A-B
• B-C
• C-D
• D-E

Which direction shows an increase in potential energy?

• From point A to Point F

• From Point F to Point A

• There is no increase.

Stored energy due to the interactions between particles;

• kinetic energy

• potential energy

• mechanical energy

• electrical energy

the process by which a gas changes to a liquid.

• condensation

• vaporization

• melting

• freezing

the result of the motion of all the particles, and the distance and attractions between those particles in the system.

• boiling energy

• electric energy

• thermal energy

• potential energy

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

Which segment shows boiling?

• A to B

• B to C

• D to E

• E to F

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

• 100 C
• 60 C
• 80 C
• 20 C