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unit three AP Chem
vocabulary terms for unit three
| Term | Definition |
|---|---|
| Dalton's law of partial pressure | for a mixture of gases in a container total pressure exerted by the mixture is the sum of pressures of each gas would exert if it were alone |
| partial pressure | independent pressures exerted by different gases in a mixture. |
| mole fraction | ratio f the number of moles of a given component in a mixture to the total number of moles in the mixture |
| kinetic molecular theory (KMT) | model that assumes that an ideal gas is composed of tiny particles (molecules) in constant motion. |
| root mean square velocity | square root of the average of the squares of individual velocities of gas particles |
| joule | defined as a kilogram meter squared per second squared kg x m2/s2 |
| diffusion | mixing of gases |
| effusion | passage of gas through a tiny orifice into an evacuated chamber |
| Graham's law of effusion | rate of effusion of a gas is inversely proportional to the square root of the mass of its particle |
| real gas | gases that have a finite volume |
| Van der Waals equation | mathematical expression for describing the behavior of real gases |
| atmosphere | mixture of gases that surround the Earth's surface |
| air pollution | contamination of the atmosphere, mainly by gaseous products of transportation and production of electricity. |
| photochemical smog | air pollution produced by action of light on oxygen, nitrogen oxides, and unburned fuel from auto exhaust to form ozone and other polutants |
| acid rain | result of air pollution by sulfur dioxides |
Created by:
mrsklann