Question

How will you determine the hardness of a given material?

Answer 1

All three methods involve indentation of the material. The hardness is calculated by measuring the force applied and comparing this to some geometrical aspect of the indentation such as the surface area or depth. Hold your mouse over the image to see the indentations that result from the three different tests


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Answer 2

Mohs Hardness Test. As common sense dictates, Mohs Scale is based on the fact that a harder material will scratch a softer one. By using a simple scratch test, you can determine the relative hardness of an unknownmineral.