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The quality or state of being hard, literally or figuratively., The cohesion of the particles on the surface of a body, determined by its capacity to scratch another, or be itself scratched;-measured among minerals on a scale of which diamond and talc form the extremes., The peculiar quality exhibited by water which has mineral salts dissolved in it. Such water forms an insoluble compound with soap, and is hence unfit for washing purposes.

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Daryl Kemmer

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2y ago
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6mo ago

Hardness typically refers to the resistance of a material to deformation, scratching, or other forms of permanent alteration. It is a property that can affect how a material behaves under different conditions, such as mechanical stress or impact. Hardness can be measured using various methods, such as the Mohs scale or the Vickers hardness test.

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Q: What of the meaning hardness?
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what is the meaning of Scleroderma?

A disease of adults, characterized by a diffuse rigidity and hardness of the skin.


What is the hardness of chalk?

Chalk has a Mohs hardness of 1, meaning it is very soft and can be easily scratched with a fingernail.


What is the term has an opposite meaning of osteosclerosis?

Abnormal hardness and density of bone.


What is biblical meaning of diamonds?

According to Smith's Dictionary of the Bible, for the few mentions of 'diamond', which are described in the Hebrew Language, the only meaning is that of the stone's hardness.


Which mineral will scratch glass (hardness5.5) but not pyrite?

Quartz will scratch glass, as its hardness is usually around 7. Pyrite, on the other hand, has a hardness of 6 to 6.5, meaning it would not be able to scratch glass.


What is the meaning of total hardness?

Total hardness refers to the overall concentration of calcium and magnesium ions in water. These ions can create issues such as scale buildup in pipes and appliances. Total hardness is often measured in parts per million (ppm) or milligrams per liter (mg/L).


Is wood being softer than coal a physical property?

Yes, the hardness of a material is a physical property. Wood is softer than coal, meaning it has a lower hardness and can be easily scratched or dented compared to coal.


Can Muscovite scratch glass?

No, Muscovite cannot scratch glass. Muscovite has a hardness of around 2.5-3 on the Mohs scale, while glass has a hardness of around 5.5, meaning glass is harder than Muscovite.


If town water is too hard already meaning draining pool water is not an option how can calcium hardness be lowered?

There are chemical products that reduce hardness of water. "Calgon" used to be a popular brand name for one.


What is calcite hardness?

Calcite has a hardness of 3 on the Mohs scale, meaning it is relatively soft and can be scratched by harder materials. It is composed of calcium carbonate and is commonly found in sedimentary rocks such as limestone and marble.


What is the hardness of Limonite on the mohs hardness scale?

Limonite has a hardness of about 4 to 5.5 on the Mohs hardness scale.


Why is streak and hardness poor tests used to identify gold?

Streak and hardness tests are considered poor for identifying gold because gold has a distinctive yellow color that does not change when scratched (streak test) or when subjected to hardness testing. Gold is also a relatively soft metal with a hardness of around 2.5-3 on the Mohs scale, meaning it can be easily scratched by many common objects, making hardness testing less reliable for gold identification.