Vocabulary / Key Terms
Solid: Matter in a state that has a definite shape and volume.
Liquid: Matter in a state that has a definite volume, but has no shape.
Gas: Matter as a state that has no definite shape or volume.
Volume: the amount of space that an object takes up
Mass : the amount of matter in an object
Weight : a measure of how strongly gravity pulls on an object
State of Matter : one of three forms that matter can take
Melting Point : the particular temperature at which a substance changes state from solid to liquid
Evaporation : the slow changing of a liquid into a gas
Boiling Point : the particular temperature in which a substance changes state from liquid to gas
Freezing Point : the particular temperature at which a substance changes state from liquid to solid
Sublimation : the process in which matter changes state from a solid directly into gas
Density : a measure of how tightly matter is packed in a given amount of space