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F a material has a hardness of 8, it cannot be scratched by a material with a hardness of 7. True false
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Feb 13, 2019
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F a material has a hardness of 8, it cannot be scratched by a material with a hardness of 7. True false
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Pratap Sharma
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True.
Same concept as nothing can scratch a diamond (hardness of 10) but a diamond can scratch anything.
JazziJeff
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Feb 17, 2019
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