States of Matter/ Solutions

• It remains the same.
• It changes greatly.
• It changes minimally.
• Unable to tell.

In which region(s) does temperature increase?

• Region 1, 3, & 5
• Region 2 & 4
• Region 1 only
• Region 1 & 2

Describe the substance between letters C and D. 

• Gas
• Liquid
• Melting
• Evaporating

Between which points is the substance changing its state of matter?

• A-B only. 
• A-B, C-D, E-F
• B-C only. 
• B-C, D-E

Thermal energy always moves:

• From a high temperature object to a lower temperature object.

• From a lower temperature object to a higher temperature object.

• From an object with lower kinetic energy to an object with higher kinetic energy.

• From an object of higher mass to an object of lower mass.

When does condensation happen?

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

Given the heating curve of a solid being heated at a constant rate, what is the boiling point of this substance?

• 20°C

• 50°C

• 110°C

• 170°C

The melting point of the sample is

• -60 ºC

• -100 ºC

• 60 ºC

• 100 ºC

NaCl(s) was heated up starting at an initial temperature of 0°C. The heating curve is shown in the picture. What is the melting point of this substance?

• 0°C

• 801°C

• 1000°C

• 1465°C

Given the heating curve of water, what is happening to potential and kinetic energy during segment CD?

• the potential energy and kinetic energy both increase

• the potential energy increases while the kinetic energy decreases

• the potential energy is constant while the kinetic energy increases

• the potential energy increases while the kinetic energy is constant