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Chap. 16

TermDefinition
kinetic theory explanation of the behavior of molecules in matter; states that all matter is made up of constantly moving particles that collide without losing energy
diffusion spreading of particles throughout a given volume until they are uniformly distributed
melting point temperature at which a solid begins to liquefy
plasma matter consisting of positively and negatively charged particles
heat of fusion amount of energy required to change a substance from the solid phase to the liquid phase
thermal sum of kinetic and potential energy of the particles in an object; is transferred by conduction, convention, and radiation
boiling point the temperature at which the pressure of the vapor in the liquid is equal to the external pressure acting on the surface of the liquid
thermal expansion increase in the size of a substance when the temperature is increased
heat of vaporization the amount of energy required for the liquid at its boiling point to become a gas
buoyancy ability of a fluid--a liquid or gas-- to exert an upward force on an object immersed in the fluid
pressure amount of force exerted per unit area; SI unit is the pascal (Pa)
viscosity a fluid's resistance to flow
pascal SI unit of pressure
Created by: emilymarroquin
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