Chem Unit 1 Quiz 2

In which region(s) does temperature increase? (a)  

• Region C only
• Regions B and D
• Regions A, C, and E
• Regions A and B

In which region(s) does kinetic energy increase? (a)  

• Region C only
• Regions B and D
• Regions A, C, and E
• Regions A and B

In a heating curve, diagonal lines indicate temperature is __________, while flat lines indicate temperature is __________.

• Constant, changing

• Changing, constant

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

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

Describe the substance at letter A. (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

The melting point of the sample is

• -60 ºC

• 20 ºC

• 60 ºC

• 100 ºC

NaCl was heated 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

Which letter indicates where water is in both the solid and liquid phase at the same time?

• A

• B

• C

• D

• E

Matter can not be created nor destroyed: it can only be

• Destroyed a little bit
• Invisible
• Transformed, changed
• None of the above