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Hardness
Hardness refers to various properties of matter in the solid phase that give it high resistance to various kinds of shape change when force is applied. Hard matter is contrasted with soft matter.
A rock's hardness is its resistance to scratching or abrasion. This is commonly measured using the MOH's scale of hardness.
a penny has a hardness of 3 depending on what it is being scratched on.
Minerals are tested for hardness by performing a scratch test. The unknown mineral is scratched with another object that the hardness is known. For example, a unknown mineral may be scratched with a piece of metal to compare the resistance.
hardness
Hardness
This describes a mineral's Mohs hardness.
This describes a mineral's Mohs hardness.
Moh's hardness scale was used to determine a mineral's resistance to being scratched. The tendency of a mineral to break along smooth flat surfaces is cleavage.
Hardness measures a mineral's resistance to being scratched.
Mohs scale of hardness
The Mohs mineral hardness scale.
Hardness measures a mineral's resistance to being scratched.
That would be its Mohs hardness.
The resistance of a mineral to being scratched is known as its 'hardness'. This is a relative measurement determined by whether it scratches, or is scratched by, other materials of determined hardness. Hardness is measured on the Mohs scale. To give to some idea, diamond (the hardest known mineral) is a 10, while talc (the softest) is 1. A copper coin is around 3, a fingernail is around 2, an iron nail is around 5. Quartz, for example, is a 7.
A mineral's resistance to being scratched is known as it's hardness. You can determine hardness by scratching it with another material whose hardness is already known. If it can be scratched, then the hardness is lower. If the unknown leaves a scratch on the known material, then its hardness is higher.