Physical Sci Chpt 3

What line segment represents only the solid state?

• A-B
• B-C
• C-D
• D-E

In which segment is the kinetic energy remaining constant?

• A-B
• B-C
• C-D
• E-F

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

• 100 C
• 60 C
• 80 C
• 20 C

Between which points is water changing states of matter?

• A <----> B

• B <----> C

• C <----> D

• D <----> E

• E <----> F

The melting point of the sample is

• -60 ºC

• -100 ºC

• 60 ºC

• 100 ºC

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

When does condensation happen?

• solid to liquid
• liquid to gas
• gas to liquid
• solid to gas

This curve indicates what about the heat energy?

• Heat energy is being added or absorbed

• Heat energy is being released

The state of matter where particles are very spread out and moving quickly.

• gas

• liquid

• solid

• Helium

During a PHASE CHANGE, like freezing, temperature...

• increases.

• decreases.

• does NOT change.

• varies.