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Unit 3 Minerals
Test on October 28, 2015
| Term | Definition |
|---|---|
| Elements | An element is a substance that cannot be broken down into simpler substances by ordinary chemical means. |
| Bohr Model | 1st energy level is two, cannot go above 8 |
| Ore | Is a rock that contains high enough concentrarions of a desired substance, such as metal, so it can be mined for a profit. |
| Hardness | How easily a mineral scratches materials. |
| Mineral Charaistics | Color, crystal shape, clevage/fracture, luster, hardness, streak, specific gravity. |
| Streak | The color of the powdered form of the mineral. |
| Fracture | Minerals that break at random with rough or jagged edges. |
| Cleavage | Minerals break along smooth, flat surfaces and every fragment has the same general shape. |
| Color | Visible color of the mineral. (Least reliable test.) |
| Gemstone | A gemstone is a rare and attractive mineral tha can be worn such as jewlery. |
| Minerals | A mineral is a naturally occuring, inorganic solid, with a crystal shape that repeatrs itself, and a definite chemical composition (elements always the same.) |
| Density | A specific gravity, attraction to gravity, bending of light, smell and taste. Formula for density: mass/volume. |
| Solid | All minerals are solids. A solid matter with tightly packed atoms or irons that has a definite shape and volume. |
| Luster | Surface reflection |
| Metallic Luster | Shiny like metal |
| Nonmetallic luster | Dull, non-shiny surface. |
| Native Element | a mineral made up of only one element and uses its ame such as iron. |
| Iron | (Fe) it is the main element in steel, which is used in buildinigs and vehicles. |
| Crystaline form | Particles that dissolve in a liquid, Melted materials solidify and form crystals. |
| Bauxite | The most abundant metallic mineral resources. |
| Silicate | (Si) must have silicon and oxygen. |
| Non Silicate | Dose not have silicon and oxygen. |