Question

A mineral can scratch any mineral harder than itself. True or False? I said it is false. My Mom told me I am wrong, it is true!! Can you tell me who is correct?

Answer 1

Your mom is right. She get's an A. Here is a site where you can read about the moh scale of hardness.
http://en.wikipedia.org/wiki/Mohs_scale_of_mineral_hardness

Answer 2

Thinking logically, I would go with your theory, but after I looked at the Wikipedia page, I realized that your mom is right. Logic is not always the right solution. :)

Answer 3

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