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chap16 vocab

vocab

TermDefinition
kinetic theory explanation of how particles in matter behave
melting point the temp. at which a solid begins to liquefy
heat of fusion The amount of energy required to change a substance from the solid phase to the liquid phase at its melting point
boiling point the temp. at which the pressure of the vapor in the liquid is equal to the external pressure acting on the surface of the liquid
heat of vaporization the amount of energy required for the liquid at its boiling point to become a gas.
Diffusion is the spreading of particles throughout a given volume until they are uniformly distributed
Plasma is matter consisting of positively and negatively charged particles
Thermal expansion an increase in the size of a substance when the temp. is increased
Buoyancy the ability of a liquid or gas to exert an upward force on an object immersed in it
Pressure force exerted per unit area
viscosity the resistance to flow by a fluid
pascal unit that measures pressure
Created by: Patti_lover20
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