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8th Grade Science
Vocabulary : Minerals
| Term | Definition |
|---|---|
| cleavage | the tendency to break along smooth, flat surfaces |
| crystal | a solid in which the atoms are arranged in orderly, repeating patterns |
| density | equal to an object's mass divided by the object's volume (g/cm3) |
| fracture | the tendency to break along uneven surfaces |
| gemstone | a rare and attractive mineral that can be worn as jewelry |
| hardness | the resistance of a mineral to being scratched |
| inorganic | not from biological origins (not alive, never was alive, never will be alive) |
| luster | the way a mineral reflects or absorbs light at its surface (metallic/nonmetallic) |
| magma | hot, melted rock below the earth's surface that cools to form crystals |
| mineral | a naturally occurring, inorganic solid with a crystal structure and definite composition |
| Mohs Hardness Scale | scale used to compare the hardness of various minerals ranging from hardness (10-diamond) to softest (1-talc) |
| native element | minerals made of only one element (example iron and copper) |
| opaque | a material that will not let light pass through |
| ore | a rock or mineral that is mined for a profit (typically a metal) |
| organic | from biological origins |
| oxides | minerals containing oxygen and a metal |
| silicates | minerals containing silicon and oxygen |
| streak | the color of a mineral in powered form |
| translucent | a material that lets light through, but not clearly |
| transparent | a material that lets light through clearly (you can see an image through it) |
Created by:
HOMSSeminar
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