Matter that has a definite shape and volume
Solid
Matter that has no definite shape but a definite volume
Liquid
Matter that has no definite shape or volume
Gas
Phase change from solid to a liquid
Melting
Phase change from a liquid to a solid
Freezing
Phase change from a liquid to a gas
Vaporization
Phase change from a gas to a liquid
Condensation
Phase change from a solid to a gas
Sublimation
A property that can be observed without changing the identity of the substance.
Physical Property
Heat is released
Exothermic
Heat is absorbed
Endothermic
Constant, random motion
Particle motion of gas
Constant motion, closer together, less kinetic energy
Particle motion of liquids
Fixed in place, packed tightly
Particle motion of solid
The volume of a fixed mass of gas varies inversely with the pressure at constant temperature
Boyle's Law
The volume of a fixed mass of gas at constant pressure varies directly with the Kelvin temperature scale
Charles' Law