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Ch. 3 Holt

States of Matter

TermDefinition
plasma a state of matter that starts as a gas and then becomes ionized
energy the capacity to do work
thermal energy the kinetic energy of a substance's atoms
evaporation the change of a substance from a liquid to a gas
sublimation the process in which a solid changes directly into a gas
condensation the change of a substance from a gas to a liquid
fluid a non-solid state of matter in which the atoms or molecules are free to move past each other as in a gas or liquid
buoyant force the upward force exerted on an object immersed in or floating on a fluid
pressure the amount of force exerted per unit area of a surface
Archimedes principle the principle that states that the buoyant force on an object in a fluid is an upward force equal to weight of the volume of a fluid that the object displaces
pascal the SI unit of a pressure equal to the force of 1 N exerted over an area of 1 m sq.
viscosity the resistance of a gas or liquid to flow
Boyle's law the law that states that for a fixed amount of gas at a constant temperature, the volume of the gas increases as the pressure decreases and the volume of the gas decreases as the pressure of the gas increases.
charles law the law that states that for a fixed amount of gas at a constant pressure the volume of the gas increases as the temperature of the gas increases
Created by: haasem