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Heating and Cooling Curves
Worksheet
Grade Level
Chemistry
11.50 Heating and Cooling Curves
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Why is the heat of vaporization often much greater than the heat of fusion for the same substance?
A
Vaporization breaks every covalent bond inside each molecule, while fusion does not.
B
Fusion always occurs at a higher temperature than vaporization.
C
Vaporization separates particles far enough to form a gas, requiring more attraction to be overcome.
D
Fusion requires no energy because the temperature is constant.
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