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Minerals
| Question | Answer |
|---|---|
| Cleavage | breaking of minerals or rocks along certain preferred planes or directions |
| Crystal | a solid with orderly atomic arrangement; may or may not develop external faces that give it crystal form |
| Hardness | minerals’ resistance to scratching on a smooth surface |
| Mineral | a solid homogeneous crystalline chemical element or compound that results from the inorganic processes of nature |