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Reviewer [FREE] Chegg Unlock #1

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Answer 1


The boiling point of any substance is defined as the temperature at which the vapor pressure of the liquid becomes same as the external atmospheric pressure. When heat is added to the liquid, the temperature of the liquid increases until the boiling point is reached. Heat added to the liquid is used to convert it to a gas and the temperature of the liquid remains constant. Liquids are not tightly held as in the rigid crystal structures of solids, so liquid molecules can move around.

Liquid molecules do not possess enough energy to fully depart from one another, as they can in the gaseous state. There are intermolecular forces at work that help liquid molecules to remain close together. At a liquid's boiling point, heat added to the liquid is used to agitate these intermolecular forces, which separates the molecules from one another and gives them enough mobility to enter the gaseous state.
 

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