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Chapter 10 Voca

Diffusion Spontaneous mixing of the particles of two substances caused by their random motion.
effusion A process by which gas particles pass through a tiny opening.
elastic collision A collision 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 it’s container; a liquid or a gas.
ideal gas An imaginary gas that perfectly fits all 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 assumptions of the kinetic-molecular theory.
atmosphere of pressure (atm) Exactly equivalent to 760mm Hg.
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 meter per second each second it is applied.
pascal The pressure excerpted by a force of one newton acting on an area of one square meter.
kilopascal The multiplet of peaks you see in the ESR spectrum.
pressure The force per unit area on a surface.
standard temperature and pressure (STP) The agreed-upon standard conditions of exactly 1 atm pressure and 0 degrees celsius.
standard ambient temperature and pressure (SATP) The maximum and minimum amounts by which the pressure varies from normal ambient pressure.
torr A type of vacuum pump capable of pressures down to .01 torr.
absolute zero The temperature -273.15 C given a value of zero in the Kelvin scale.
Kelvin The temperature scale used in chemistry, physics and some engineering calculations. Zero degrees Kelvin (-273 centigrade) is the temperature at which all thermal motion ceases.
Boyle’s Law The volume of a fixed mass of gas
Charles’s Law The volume of a fixed mass of gas at constant pressure varies directly with the kelvin temperature.
Combined gas law A measure of the relative tendency of an atom to attract electrons to itself when chemically combined with another atom.
Dalton’s Law of partial pressure States that the total pressure exerted by a gaseous mixture is equal to the sum of the partial pressures of each individual component in a gas mixture.
Gay-Lusscac’s Law States that the pressure of a sample of gas at constant volume, is directly proportional to its temperature in Kelvin.
Ideal gas law One in which all collisions between atoms or molecules are perfectly eleastic and in which there are no intermolecular attractive forces.
Partial pressure Which is the pressure which the gas would have if it alone occupied the volume.
Avogadro’s Law Two given samples of an ideal gas, at the same temperature, pressure and volume, contain the same number of molecules.
van der Waals equation Is an equation of state for a fluid composed of particles that have a non-zero volume and a pairwise attractive inter-particle force.
bar 100 kPa
Gas Constant Is a physical constant which is featured in a large number of fundamental equations in the physical sciences, such as the ideal gas law and the Nernst equation.
Created by: EllieKennamer



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