| A | B |
|---|
| element | A substance that cannot be changed to simpler substances by ordinary means. |
| compound | two or more element chemically combined. |
| mixture | combination of two or more substances that can be separated physically. |
| matter | anything that has mass and takes up space |
| solid | has a definite shape and takes up a definite volume |
| liquid | has a definite volume but not a definite shape |
| gas | does not have a definite volume or shape |
| plasma | a hot gas of electrically charged particals |
| physical properties | characteristics of matter that can be studied without changing the makeup of a substance |
| melting point | the temperature at which a solid becomes a liquid |
| freezing point | the temperature at which a liquid freezes |
| boiling point | the temperature at which a liquid boils |
| condensation piont | the temperature at which a gas condenses, or changes to a liquid |
| density | the mass per unit volume of a substance |
| specific gravity | the radio between the density of a substance and the density of water |
| physical change | one in which the appearance of matter changes but it's chemical properties and makeup remain the same |
| chemical change | is a change that produces one or more kinds of matter that are different from those present before the change |
| chemical property | the ability of a substance to undergo or resist chemical changes |
