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