Evaporation or vaporization
is the escape of molecules from the liquid state to the gas or vapor state.
When a liquid vaporizes in a closed system l some of the molecules in the vapor or gaseous state strike the surface and return to the liquid state
The resistance of a liquid to an increase in its surface area
The spontaneous rising of a liquid in a narrow tube.
When a liquid is placed in a glass cylinder, the surface of the liquid shows a curve
The temperature at which the vapor pressure of a iquid is equal to the external pressure above the liquid
Normal Boiling Point
A standard pressure of 760 torr.
Heat of Fusion
The energy required to change exactly one gram of a solid at its melting point into a liquid
Heat of Vaporation
The energy required to change exactly one gram of liquid to vapor at its normal boiling point
The pressure exerted by a vapor in equilibrium with its liquid
Substances that evaporate readily
directly from the solid to the gaseous state, bypassing the liquid state