Multiple Choice
On the Mohs hardness scale,quartz has a hardness of 7 and calcite has a hardness of 3.This means that _______.
A) calcite can scratch quartz
B) quartz is four times harder than calcite
C) calcite is four times harder than quartz
D) quartz can scratch calcite
Correct Answer:
Verified
Correct Answer:
Verified
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