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8 September, 11:02

Will fluorite scratch penny why or why not

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  1. 8 September, 11:23
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    I think yes because Fluorite is a liquid and liquids could scratch penny's
  2. 8 September, 11:29
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    Fluorite can scratch a copper coin but cannot be scratched by a copper coin. This is because according to Mohs scale of hardness, fluorite has a hardness of four. Copper has a hardness of three. Therefore fluorite is a harder mineral than copper and will scratch copper but it will not be scratched by copper. Mohs based his scale on the fact that some minerals could scratch others. If one mineral could scratch another but could not be scratched by it, he reasoned that it must be harder.
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