##### Comp 2
 gas
 one of the three states of matter where the particles are far apart and the attractive forces between the particles are overcome; no definite shape and no definite volume
 plasma
 matter consisting of positively and negatively charged particles.
 pressure
 amount of force exerted per unit area; SI unit is the pascal.
 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.
 Bernoulli’s Principle
 states that as the velocity of a fluid increases, the pressure exerted by the fluid decreases.
 13.density
 mass per unit volume of a material
 heat of vaporization
 the amount of energy required for the liquid at its boiling point to become a gas.
 pascal
 SI unit of pressure
 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 fusion
 amount of energy required to change a substance from the solid phase to the liquid phase.
 diffusion
 spreading of particles throughout a given volume until they are uniformly distributed.
 Kinetic Energy
 energy a moving object has because of its motion
 Pascal’s Principle
 states that pressure applied to a fluid is transmitted throughout the fluid.
 Archimedes’ Principle
 states that the buoyant force on an object is equal to the weight of the fluid displaced by the object.
 thermal expansion
 increase in the size of a substance when the temperature is increased.
 Charles’ Law
 states that the volume of a gas increases with increasing temperature as long as the pressure is held constant
 solid
 one of the three states of matter where the particles are moving more freely, possessing enough kinetic energy to slip out of an ordered arrangement; no definite shape (takes the shape of its container) and definite volume.
 Boyle’s Law
 states that if you decreases the volume of a container of gas and hold the temperature constant, the pressure of the gas will increase
 melting point
 at which a solid begins to liquefy
 buoyancy
 ability of a fluid – a liquid or a gas – to exert an upward force on an object immersed in the fluid.
 viscosity
 a fluid’s resistance to flow.