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Kinetic Molecular Theory

A series of free High School Chemistry Video Lessons from Brightstorm.

Vapor Pressure
Vapor pressure is the pressure caused by the evaporation of liquids. Three common factors that influence vapor press are surface area, intermolecular forces and temperature. The vapor pressure of a molecule differs at different temperatures.

Gases
The gaseous state is one of the three phases of matte. Gases are obtained through vaporization from liquid and sublimation from solid. When a liquid vaporizes, it is often called boiling. Gases are the least dense state of matter because they contain high kinetic energy.

Avogadro's Principle
Avogadro’s Principle, also known as Avogadro’s Law, is one of the gas laws. Avogadro’s Principle states that equal volume of mass at the same temperature and pressure contain the same number of molecules. This principle can be expressed in mathematical terms as volume/amount of gas = proportionality constant.

Dalton's Law
Dalton’s Law states that total pressure of a gaseous mixture is equal to the sum of the partial pressures of each substance present.

Graham's Law
Graham’s Law states that the rate of effusion for a gas is inversely proportional to the square root of its molar mass.

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