Friday, May 17, 2019

Importance of Metals

A metallic element is defined as an opaque vivid element which possesses properties such(prenominal) as malleability and ductility. Malleable meaning that they stack be hammered into shapes and waxy meaning they can be drawn into wires. They are to a fault rattling strong and posses high pliant strength and are good conductors of heat and electricity. Metals are shiny, and also have high densities. Metals are a very important and significant part of chemistry. However, their importance is not just limited to chemistry they are also used in our daily lives.We may not realize this but without metals we would not be able to continue with our daily routines as metals play an important role. Metals are used in the fashioning of household conveniences like ovens, dishes, cutlery etc. they are also used in deportee such as cars, buses, trucks, trains. Computers and electronic devices are also made up of metals. Electrical power fruit and distribution, even closely of the construct ion is made out of steel which is an alloy a change of metals such as iron and carbon.And it is because of the specific properties of metals, which allow them to be used in the qualification of such objects. Although we bring down metals almost everywhere we go, metals are not found easily. In fact, most of the metals are present in the primers crust but when found in the earth these are often multiform with other substances. The rocks in the earths crust are a mixture of substances, these rocks from which a metal can be extracted from is known as an ore. The method used to extract metals from ores depends on the reactivity of that metal.Some unreactive metals can even be found in the native state, like gold. On the other hand, most metals are too reactive to exist on their own like aluminium, which has to be extracted using a method called electrolysis. And some moderately reactive metals that are in the middle of the reactivity series can be extracted using reduction of oxide s like iron. Gold is not found in a mixture or combined state but is also quite rare. Gold is extracted by mining.Gold is a very demanding and expensive metal, the 2nd most expensive after platinum. The metal aluminium is extracted from its one aluminium oxide which is also known as bauxite which is mainly aluminium oxide (Al2O3)It is also the most abundant metal in the earths crust but is never found separately, only in its bauxite. Aluminum being a reactive metal has to be extracted using electrolysis. The process of electrolysis requires massive amount of energy and therefore making aluminium expensive to produce.

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