Which mineral is soft enough to be scratched by a fingernail?
a)
corundum
b)
ca...
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Chemistry, 13.10.2020 14:01 anytka21ovxqoa
Which mineral is soft enough to be scratched by a fingernail?
a)
corundum
b)
calcite
c)
talc
d)
topaz
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Answers: 1
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