Density equals mass divided by volume. B. Special a. Physical properties and changes 1. Crystalline solids-regular repeating pattern. Amorphous solids-solids that do not keep their shapes like rubber or wax.
Some scientists say they are very slow moving liquids.
Each kind of matter has its own melting and freezing point. Boyle's Law-the volume of gas varies inversely with its pressure provided the temperature does not change. Charles' Law - the volume of gas varies directly with the temperature. Sublimation-A change from solid to gas without turning into a liquid first like dry ice. See chemistry page .