| A | B |
|---|
| Matter | anything that takes up space and has mass. |
| Atom | smallest part of an element that has all the properties of that element. |
| molecules | Two or more atoms held together by chemical forces. |
| compound | Chemical substance made of atoms of different elements bonded together. |
| mixture | Two or more substances physically combined. |
| chemical formulas | Combination of chemical symbols used to represent compounds. |
| inorganic | Not formed from living things or the remains of living. |
| crystal | Solid in which the atoms or molecules are arranged in a definite pattern that is repeated over and over again. |
| luster | way in which a mineral reflicts light from its surface. |
| hardness | Ability of a mineral to resists being stracthed. |
| streak | coloe of the powder left by a mineral when it is rubbed against a hard, rough surface. |
| density | mass per unit volume of a subtance. |
| ores | mineral or rock from which useful metals or nonmetals can be profitably removed. |
| metals | element that is shiny, conducts electricity and heat and is easily shaped. |
| nonmetals | element that has a dull surface, is a poor cunductor of electricity and heat and is not easily shaped. |
| rocks | Hard substance composed of one or more minerals. |
| Igneous Rock | rock formed from molten lava or magma |
| sedimentary rock | rock formed by the compacting and cementing of sediments or by other nonigneous processed at the earths surface. |
| sediments | particles of rock or organic minerals that have been carried along and deposited by water, wind or glaciers. |
| Metamorphic rock | Rock changed in form as a result of chemical reactions, heat, and/or pressure |
