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2/2/21

[Answer] What is hardness?

Answer: Hardness is how strong or solid something is. Ex. A rock can scratch your fingernail if it is stronger




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What is hardness? Janka hardness test - Wikipedia Hardness - Wikipedia Mohs scale of mineral hardness - Simple English Wikipedia ... Hardness is a measure of the resistance to localized plastic deformation induced by either mechanical indentation or abrasion. In general different materials differ in their hardness; for example hard metals such as titanium and beryllium are harder than soft metals such as sodium and metallic tin or wood and common plastics. Macroscopic hardness is generally characterized by strong intermolecular bonds but the behavior of solid materials under force is complex; therefore there are different measurements of hard… 73 rows · number symbol name Mohs hardness Vickers hardness (MPa) Brinell hardness (MPa) … Water's hardness is determined by the concentration of multivalent cations in the water. Multivalent cations are positively charged metal complexes with a charge greater than 1+. Usually the cations have the charge of 2+. Common cations found in hard water include Ca and Mg . These ions enter a water supply by leaching from minerals within an aquifer. Common calcium-containing minerals are calcite and gypsum. A common magnesium mineral is dolomite (which also contains calcium). Rainwater and distilled water are Mon Jan 25 2010 13:30:00 GMT-0500 (Eastern Standard Time) · The hardness of a mineral is mainly controlled by the strength of the bonding between the atoms and partly by the size of the atoms. It is a measure of the ...

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