Structure and Properties of Matter

What happens along the AC line?

• Melting/Freezing

• Boiling/Condensing

• Boiling/melting

• freezing/condensing

What happens along the BC line?

• Melting/Freezing

• Boiling/Condensing

• Boiling/melting

• freezing/condensing

The critical point is found at point.....

• A

• B

• C

• D

What is being measured on the y axis?

• Pressure

• Temperature

• Energy

• Mass

What is being measured on the x axis?

• Pressure

• Temperature

• Energy

• Mass

The temperature and pressure conditions at which the solid, liquid, and gas phases of a substance exist at the same time is called the

• Critical point

• Triple point

• Melting point

• Boiling point

What line segment represents only the solid state? (Diagram F)

• A-B

• B-C

• C-D

• D-E

Between which points is the temperature of the substance remaining constant? (Diagram F)

• A-B only.

• A-B, C-D, E-F

• B-C only.

• B-C, D-E

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

• 100 C

• 60 C

• 80 C

• 20 C

Are the particles moving faster or slower as time goes on? (Diagram F)

• Faster

• Slower