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Dr. H Gas Laws
Dr. Heiny: (Standard 04) Behavior of gases; gas laws
Question | Answer |
---|---|
Absolute temperature scale | Temperature scale using the kelvin (K) as the unit of temperature, in which water freezes at 273 K and boils at 373 K |
Absolute zero | The lowest possible temperature where nothing could be colder, and no heat energy remains in a substance. |
Atmospheric pressure | The pressure exerted by the earth's atmosphere at any given point, being the product of the mass of the atmospheric column of the unit area above the given point and of the gravitational acceleration at the given point. |
Barometer | A device used to measure pressure in the atmosphere |
Celsius | Unit of temperature used in the Celsius scale, symbol is °C |
Diffusion | The movement of gas from a high concentration to a low concentration. |
Effusion | The movement of gas through a pore or capillary in to another gaseous region. |
Kelvin | Standard International (SI) unit of thermodynamic temperature, in which the zero represents a point of no motion. |
Kinetic Molecular Theory | A model that shows that ideal gas is made up of molecules in constant motion. |
Molar volume | The volume occupied by a mole of a substance at STP; 22.4 liters. |
Pascal | The SI unit of pressure. |
Pressure | force per area. |
STP | Standard Temperature & Pressure; 273 K (0° Celsius) and 1 atm pressure. |
Boyle's law | the statement that the volume of a gas is inversely proportional to its pressure at a constant temperature |
Charles's law | the statement that the volume of a gas at constant pressure is directly proportional to its temperature in Kelvin |
Gay-Lussac's law | the statement that the pressure of a gas varies directly with the Kelvin temperature when the volume remains constant |
combined gas law | the statement that combines Boyle's law, Charles's law, and Gay-Lussac's law into one single law |
Ideal gas law | statement that describes the behavior of an ideal gas with given conditions of pressure, volume, temperature, and amount of substance |
calorimeter | a device used to measure the amount of heat gained or lost by a substance during a change in temperature |