Multiple Choice
A mineral's hardness is determined by the number and the strength of chemical bonds, but how is it actually determined?
A) by weighing it on a Mohs scale.
B) by whether or not it cleaves.
C) by looking at its streak.
D) by its resistance to scratching or abrasion by other materials of known hardness.
Correct Answer:

Verified
Correct Answer:
Verified
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