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When a substance is heated, what happens to its molecules?
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8. Thermochemistry
Nature of Energy
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Which type of energy from the sun is primarily required for the evaporation of water to occur?
A
Thermal energy
B
Electrical energy
C
Nuclear energy
D
Mechanical energy
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Understand that evaporation is the process where water molecules gain enough energy to transition from the liquid phase to the gas phase.
Recognize that this energy must come from the surroundings, specifically from the sun in natural conditions.
Identify the type of energy the sun provides that can increase the kinetic energy of water molecules, allowing them to escape into the air.
Recall that thermal energy (heat) increases the temperature and kinetic energy of molecules, facilitating evaporation.
Conclude that the primary type of energy from the sun required for evaporation is thermal energy.
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