Chemistry, 04.08.2019 07:00 alexmoy45p8yd7v
Monica found a clear mineral crystal. she wanted to identify its hardness. she tried to scratch it with her fingernail, a penny, and a steel nail but none of those worked. then she tried topaz, which did leave a scratch . the mineral was able to scratch glass. what mineral could monica have found? explain your answer.
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Monica found a clear mineral crystal. she wanted to identify its hardness. she tried to scratch it w...
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