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Unit 8: Gases
Term | Definition |
---|---|
Pressure | The amount of force exerted per unit area of a surface |
Newton | The SI unit for force |
Barometer | An instrument that measures atmospheric pressure |
Millimeters of Mercury | A unit of pressure |
Atmosphere of Pressure | The pressure of Earth's atmosphere at sea level ; exactly equivalent to 760 mm Hg |
Pascal | The SI unit of pressure |
Partial Pressure | The pressure of each gas in a mixture |
Dalton's law of partial pressure | The law that states that the total pressure of a mixture of gases is equal to the sum of the partial pressures of the component gases |
Boyles Law | The law that states that for a fixed amount of gas at a constant temperature |
Absolute Zero | The temperature at which all molecular motion stops |
Charle's law | The law that states that for a fixed amount of gas at a constant pressure |
Gay-Lussac's law | The law that states that the volume occupied by a gas at a constant pressure is directly proportional to the absolute temperature |
Combined gas law | The relationship between pressure, volume, and temperature of a fixed amount of gas |
Avogadro's law | The law that states that equal volumes of gases at the same temperature and pressure contain equal numbers of molecules |
Standard molar volume of a gas | The volume occupied by one mole of a gas at STP; 22.414 |
ideal gas law | The law that states the mathematical relationship of pressure , volume, temperature, the gas constant, and the number of moles of a gas |
ideal gas constant | The proportionally constant that appears in the equation of state for 1 mol of an ideal gas |
Graham's law of effusion | The law that states that the rate of effusion of a gas is inversely proportional to the square roots of the gas's density |