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Phases of Matter

Unit 2 - Phases of Matter

TermDefinition
kinetic theory explains how matter behaves -- 3 parts: all matter is composed of small particles, particles are in constant random motion, particles collide with one another and the walls of their container
intermolecular force attractive force that acts between particles
solid phase of matter in which particles are closely packed; has definite shape and definite volume
liquid phase of matter in which particles slide past each other and take the shape of their container; has definite volume but no definite shape
gas phase of matter in which particles can spread out to fill their container; has no definite shape and no definite volume
plasma most common phase of matter in the universe; phase of matter that consists of positively and negatively charged particles
boiling point the temperature at which a liquid's vapor pressure is equal to the pressure of the gas above it
melting point the temperature at which a solid begins to liquify
evaporation phase change from liquid to gas
condensation phase change from gas to liquid
sublimation phase change from solid to gas
deposition phase change from gas to solid
Boyle's Law states that as pressure is decreased, volume increases if temperature is constant (reverse is also true)
Charles' Law states that as temperature increases, volume increases if pressure is constant (reverse is also true)
pressure the amount of force exerted per unit of area (measured in pascals)
thermal energy total energy of a material's particles (kinetic and potential)
Created by: vfenstermaker