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aliina [53]
3 years ago
11

A mineral sample scratches fingernails, pennies, and glass but does not scratch steel as shown below. what is the hardness of th

e mineral?
Chemistry
1 answer:
Elodia [21]3 years ago
4 0
Friedrich Mohs devised a scale that tested mineral <span>hardness, </span>which means the resistance of a mineral to being scratched. This scale (from 1 to 10) is known as the Mohs Hardness Test. Objects are used as tools to perform the hardness test:
<span>fingernail (hardness = 2,5).
copper penny (hardness = 3)
glass plate or steel knife (hardness = 5,5)
<span>steel file (hardness = 6,5).
According to this scale </span></span><span>hardness of the mineral is between 5,5 and 6,5.</span>
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