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Chapter 16

vocabulary

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 in 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 piont 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 vaporation 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 asistace when the temperature is increased
buoyancy ability of a fluid -liquid or gas to exert an upward force on an object immersed in the fluid
pressure amount of fore exerted per unit area.
viscosity a fluid's resistance to flow.
temperature a measure of the average kinetic energy of all the particles in an object.
pascal SI unit of pressure.
Created by: yadi1998
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