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Chapter 16 Vocab.

TermDefinition
Kinetic Theory Explanation of the behavior of molecules in matter; states that all matter is made of constantly moving particles that collide without losing energy.
Melting Point Temperature at which a solid begins to liquefy.
Heat of Fusion Amount of energy required to change a substance from the solid phase to the liquid phase.
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.
Heat of Vaporization The amount of energy required for the liquid at its boiling point to become a gas.
Diffusion Spreading of particles throughout a given volume until they are uniformly distributed.
Plasma Matter consisting of positively and negatively charged particles.
Thermal Expansion Increase in the size of a substance when the temperature is increased.
Buoyancy Ability of a fluid-a liquid or a 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: ahindmon
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