| A | B |
| Matter | Anything that has mass and volume |
| Physical property | can be observed with out changing the matter |
| Conductivity | physical property that is the ability to conduct electricity |
| Mass | amount of matter in an object |
| volume | amount of space an object takes up |
| solubility | ability of a substance to dissolve in another |
| density | amount of matter in a given volume |
| pure substance | one kind of atom or molecule which cannot be broken down physical |
| mixture | two or more pure substances that can be broken down physically |
| elements | single kind of atom |
| compound | two or more atoms combined chemically |
| chemical property | describes how a substance participates in a chemical reaction |
| weight | measure of the force of gravity |
| solid | definite shape and volume |
| liquid | definite volume but not a definite shape |
| gas | no definite volume or shape |
| temperature | measure of the average kinetic energy |
| pressure | amount of force exerted per unit area |
| plasma | blend of electrons and positively charged ions |
| evaporation | liquid to a vapor (gas) on surface of a liquid |
| condensation | vapor (gas) cools and changes to a liquid |
| sublimation | changes directly from a solid to a gas |
| physical change | change of matter from one form to another without a change in chemical properties |
| chemical change | change of matter that occurs when 2 or more substances change into entirely new substances with new properties |
| law of conservation of matter | matter cannot be created nor destroyed |