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12 Cards in this Set

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Kinetic theory
an explanation of how particles in matter behave
Melting point
the temperature at which solids begin to liquify
Heat of fusion
the amount of energy required to change a substance from the solid phase to the liquid phase at its melting point
Heat of Vaporization
the amount of energy required for the liquid at its boiling point to become a gas
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
Diffusion
the spreading of particles throughout a given volume until they are uniformly dispersed
Plasma
Gas consisting of negatively and positively charged particles
Thermal Expansion
an increase in the size of a substance when the temperature is increased
Buoyancy
the ability of a fluid -- a liquid or gas -- to exert an upward force on an object immersed in it
Pressure
force exerted per unit of area
Viscosity
a resistance to flow by a fluid
Pascal (Pa)
the SI unit of pressure