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Chapter 12 Definitions

Kinetic Molecular TheoryExplains the states of matter based on the concept that the particles in all forms of matter are in constant motion.
PressureForce exerted by particles per unit surface area
PascalSI Unit of pressure
Elastic collisioncollision where no kinetic energy is lost or transferred
Diffusiontendency of molecules to move from an area of greater to lower concentration.
EffusionProcess that occurs when a gas escapes through a tiny hole in its container.
TemperatureA measure of the average kinetic energy of particles in a substance.
Boyle's LawStates that for a given mass of a gas at constant temperature, the volume of the gas varies inversely with the pressure.
Charles's LawStates that the volume of a fixed mass of gas is directly proportional to its Kelvin temperature if the pressure is kept constant.
Gay-Lussac's LawStates that the pressure of a gas is directly proportional to the Kelvin temperature if the volume remains constant
Combined Gas LawA single expression that combines the three gas laws.
Ideal Gas LawPermits you to calculate the number of moles of a contained gas when the pressure, temperature and volume are known
Avogadro's LawStates that equal volumes of gases at the same temperature and pressure contain equal numbers of particles.
Partial PressureThe contribution each gas in a mixture makes to the total pressure.
Kinetic EnergyThe energy an object has because of its motion.

Chemistry & Physics Instructor
Prentiss High School

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