Evaporation and Boiling

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Evaporation and Boiling are the result of a fluid such as water escaping from the liquid state to a gaseous state.

The process by which evaporation and boiling differs. Evaporation is where a particle of water (molecule) gains enough kinetic energy and over comes the Inter Molecular forces within the liquid and water escapes the surface of the liquid in a gaseous state. Boiling occurs when the liquid is heated up and the vapor pressure within the liquid forms bubbles. When the vapor pressure equals the atmospheric pressure the liquid beings to boil and water escapes in gaseous form called water vapor. Boiling occurs at 212 F or 100 C or 373.15 K for water. Different liquids boil at different temperatures. Evaporation occurs at much lower temperatures than 212 F or 100 C or 373.15 K for water. The evaporation rate depends on the temperature and the dew point of the atmosphere at the given point in time.

Burner off: Evaporation of Water occurs at Room Temperature

Boiling: Vapor Pressure equals that of Atmospheric Pressure, Water Vapor then Escapes from the liquid surface!