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puteri [66]
4 years ago
10

Describe how to find the hardness of an unknown mineral.

Biology
2 answers:
BartSMP [9]4 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.
dsp734 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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container one would be the fastest because there are less gas particles than the rest which gives the gas more room to bounce around.

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Homologous recombination can be used in the lab to replace a gene of interest with a selection marker. To confirm that the selec
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b. A second marker in the knock-out cassette, that if inserted into the genome results in cell death when plated on selective media.

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its a little to long for me to explain sry but if you want me to, sent me a message

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