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Heat Energy
Test Description: Review for heat energy, includes heating and cooling curve questions specific heat heat of fusion, ect
Instructions: Answer all questions to get your test result.
1) As energy is converted from one form into another the total amount of heat energy
A
remains the same
B
increases
C
decreases
2) How do you determine the phase changes on a graph?
A
horizontal portions
B
diagonal portions going up
C
diagonal portions going down
3) What does the heat of fusion indicate?
A
energy needed for melting to occur
B
a gas changing to a liquid
C
energy needed for vaporization to occur
D
energy needed for solidification to occur
4) Which of the following have the highest average kinetic energy?
A
100 ml of water at 30 degrees
B
10 ml of water at 20 degrees
C
150 ml of water at 55 degrees
D
200 ml of water at 20 degrees
5) At STP, the difference between the freezing point and boiling point of water in Kelvin is
A
180
B
373
C
100
D
273
6) Which phase change represents sublimation?
A
liquid to gas
B
liquid to solid
C
solid to gas
D
solid to liquid
7) Which temperature represents absolute zero?
A
273C
B
0C
C
0K
D
273K
8) Which kind of energy is stored within a chemical sustance?
A
kinetic
B
potential
C
free
D
activation
9) As water vaporizes at STP, its temperature remains constant. Its potential energy
A
remains the same
B
decreases
C
increases
10) What phase change is endothermic?
A
gas to liquid
B
gas to solid
C
liquid to solid
D
solid to liquid
*select an answer for all questions
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