chap four vocabualry Word Scramble
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| term | Definition |
| mineral | naturally occurring inorganic solid with a specific chemical compositions and a definite crystalline structure that forms from magma or from supersaturated solution |
| crystal | solid in which atoms are arranged in repeating patterns |
| luster | the way that a mineral reflects light from its surface two types metallic and non metallic |
| hardness | measure of how easily a mineral can be scratched which is determined by the arrangement of a minerals atoms |
| cleavage | when a mineral breaks along planes where atomic bonding is weak. |
| fracture | when a mineral breaks into pieces with arclike rough or jagged edges. |
| streak | color a mineral leaves when it is rubbed across an unglazed porcelain plate or when it is broke up and powered. |
| specific gravity | ratio of the mass of a substance to the mass of an equal volume. |
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