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ch3vocab
Chapter 3 Vocab Mrs. Birdsong
Term | Definition |
---|---|
Mineral | A naturally occurring, inorganic solid with a define chemical composition and an orderly arrangement of atoms. |
Crystal | A solid in which the atoms are arranged in orderly, repeating patterns. |
Magma | Hot melted rock material. |
Silicates | Minerals that contain silicon and oxygen. |
Hardness | A measure of how easily a mineral can be scratched. |
Luster | The way light reflects off of a mineral. |
Specific Gravity | The ratio of a minerals weight compared to water. |
Streak | The color of a mineral in powdered form. |
Cleavage | Minerals that break with smooth flat surfaces Example: Mica. |
Fracture | Minerals that break with jagged, rough, and uneven surfaces. |
Gems | Or gemstones are highly prized minerals for their beauty and because they are rare. |
Ore | A useful substance that can be mined at a profit. |