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Questions and Answers
Evaporation only occurs when molecules at the surface of a liquid gain enough energy to enter the gaseous state.
Evaporation only occurs when molecules at the surface of a liquid gain enough energy to enter the gaseous state.
True (A)
Evaporation can only happen at high temperatures.
Evaporation can only happen at high temperatures.
False (B)
Boiling is a process where molecules only at the liquid's surface gain enough energy to enter the gaseous state.
Boiling is a process where molecules only at the liquid's surface gain enough energy to enter the gaseous state.
False (B)
The boiling point of a substance is the temperature at which only the surface molecules can change to the gaseous state.
The boiling point of a substance is the temperature at which only the surface molecules can change to the gaseous state.
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When a liquid boils, its temperature increases steadily until all molecules turn into a gas.
When a liquid boils, its temperature increases steadily until all molecules turn into a gas.
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