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When a metal is repeatedly worked by hammering, or bending for example - it becomes brittle and will eventually break. Work hardening changes the properties of the metal in the area of the hardening
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Why hardness value is very important in the metallurgy study?
The hardness value is important because during metallurgy, people can make accurate deductions as to the kind of work the metals can be used for. Hard metals can be used to make knives and propeller rotors.
What is one key physical difference between transition metals and poor metals?
The hardness.
Elements described by their hardness shininess and ductility is what?
metals
What is hot hardness?
Hardness is a characteristic that applies to a range of materials-metals and nonmetals alike- and is defined as the resistance of the material to deformation.
Is a semi metal hard?
Their hardness will be less than that of metals but more than that of non metals. Hence the name, semi metals or metalloids.
How can you destroy permanent hardness of water due to sulphates of metals?
zeolites
What metals are used to make metal screws?
Metals are used for the production of screws as they are materials with high hardness and resistance to stress.
What are three properties of metals that are results of metallic bonding?
Color, hardness, and texture
List four properties of most metals?
hardness,shininess, malleability, and ductility
What is hardness of radon?
Probably soft, since the other members of the alkaline earth metals (Ca, Ba, Sr) are soft metals.
Why can't non metals be scratched?
It depends on which non metals you mean. The ability to scratch a material depends on its hardness relative to the material you use to scratch it with. With your nails you can scratch materials softer than your nails, like some plastics and minerals. But nothing can scratch in diamond because it's the hardest material there is, but in turn diamond can scratch all other materials, since they're softer that diamond including all metals and non metals. So although most metals are relatively soft, there are many non metals that are softer that some metals. Trivia: the softest metal is mercury with a hardness of 0 (it's liquid at room temperature) The hardest metal is carbon steel with a hardness of around 8 to 9 The softest mineral is talc with a hardness of 1 The hardest mineral is diamond with a hardness of 10 (a form of pure carbon)
Does potassium have hardness?
No. Alkali metals such as sodium and potassium are not usually considered contributors to water hardness. The alkaline earth and transition metals (such as calcium and iron) are. Potassium itself is a very soft metal that can be easily cut with a steel knife.
