QUICK PLEASE!!! Like diamond, graphite is a mineral composed of pure carbon. But its hardness is only between 1 and 2 on the Mohs scale. Formulate a hypothesis to explain the difference in
hardness of these minerals.

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Explanation:

Mohs Hardness Scale

Mohs Hardness Kit: A laboratory Mohs Hardness Scale kit containing: (1) talc; (2) gypsum; (3) calcite; (4) fluorite; (5) apatite; (6) orthoclase; (7) quartz; (8) topaz; and (9) corundum. Diamond is not included in most kits to keep the cost down. Also a diamond specimen would be so small that it would need to be mounted in a handle to be useful. Purchase a Mineral Hardness

What is Mohs Hardness Scale?

One of the most important tests for identifying mineral specimens is the Mohs Hardness Test. This test compares the resistance of a mineral to being scratched by ten reference minerals known as the Mohs Hardness Scale (see table at left). The test is useful because most specimens of a given mineral are very close to the same hardness. This makes hardness a reliable diagnostic property for most minerals.

Explanation:

b would be the answer