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Ch 10 voc Justen

Voc for gases

QuestionAnswer
diffusion spontaneous mixing of the particles of two substances caused by their random motion
effusion a process by which gas partially pass through a tiny opening
elastic collision a collision between gas particles and between gas particles and container walls in which there is no net loss of kinetic energy
fluid a substance that can flow and therefore take the shape of its container; a liquid or gas
ideal gas an imaginary gas that perfectly fits the assumptions of the kinetic-molecular theory
kinetic-molecular theory a theory based on the idea that particles of matter are always in motion
real gas a gas that does not behave completely according to the assumption of the kinetic molecular theory
atmosphere of pressure (atm) exactly equivalent
barometer a device used to measure atmospheric pressure
millimeter of mercury (mm of Hg) a common unit of pressure
newton the SI unit for force; the force that will increase the speed of a one kilogram mass by one merer per second
pascal the pressure exerted by a force of one newton acting on an area of one square meter
kilopascal is a unit for measureing pressure
pressure the force per unit area of a surface
standard temperature and pressure (STP) the agreed upon standard conditions of exactly 1 atm pressure and 0 C
standard ambient temperature and pressure (SATP) corresponds to 25C, 1 bar
torr non-SI unit with the ratio of 760 to 1 standard atmosphere
absolute zero the temperature -273.15 C, given a value of zero in the kelvin scale
Kelvin temperature scale used in chemistry and physics
Boyle’s Law the volume of a fixed mass of gas varies inversely with pressure at a constant temperature
Charles’s Law the volume of a fixed amount of gas at a constant pressure varies directly with the Kelvin temperature
Combined gas law the relationship between the pressure,volume, and temperature of a fixed amount of a gas
Dalton’s Law of partial pressure the total pressure of a mixture of gases is equal to the sum of the partial pressures of the component gases
Gay-Lusscac’s Law the pressure of a fixed mass of gas at a constant volume varies directly with the kelvin temperature
Ideal gas law an imaginary gas that perfectly fits all the assumptions of the kinetic-molecular theory
Partial pressure the pressure of each gas in a mixture
Avogadro’s Law equal volumes if gases at the same temperature and pressure contain equal numbers of molecules
van der Waals equation An equation of state that relates the pressure, volume, and absolute temperature of a gas taking into account the finite size of molecules, and their intermolecular attraction
bar a unit of pressure equal to 100 kilopascals
Gas Constant a constant, equal to 8.314 joules per Kelvin or 1.985 calories per degree Celsius, that is the constant proportionality in equation Pressure x Volume is n x R x Temperature, relating the pressure and volume of a quantity of gas to the absolute temperature
Created by: Justen Rhyne