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puteri [66]
3 years ago
10

Describe how to find the hardness of an unknown mineral.

Biology
2 answers:
BartSMP [9]3 years ago
6 0
For this you would require two specimens of the same nature. You take a normal hammer and a paper and pencil, and hit it gently and continue to hit it harder till it breaks, record the results.
dsp733 years ago
5 0
The scratch test.

The scratch test is used by scientists and people who study rocks and minerals to determine the strength of the rock. They have the scratchers numbered one through ten and scratch the rock or mineral until the scratcher makes a mark in the mineral then they know the strength of the rock.
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Recommended Dietary Allowance (RDA) of protein for adults is 0.8 g per kilogram of body weight. To determine your RDA for protein, multiply your weight in pounds by 0.36.The protein RDA for adults is 0.8 grams per kilogram of healthy body weight per day.

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To learn more about Recommended Dietary Allowance ,here

brainly.com/question/11824881

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