Question

What are metals how do they occur in nature

Answer 1

Metals are chemical elements that are opaque, shiny, hard, and thermally and electrically conductive. Most metals occur in compound state. One element that exists freely is Copper (Cu).

Answer 2

Metal: Metal is a material which has the properties malleability,ductility,sonorous, losturous, and good conductors of heat and electricity.

1.The earth's crust is the major source of metals. Sea water also contains some soluble salts such as sodium chloride and magnesium chloride etc.

2.Some metals like gold (Au), silver (Ag) and copper (Cu) are available in nature in free state (native) as they are least reactive.

3.Other metals mostly are found in nature in the combined form due to their more reactivity.

4.The elements or compounds of the metals which occur in nature in the earth

crust are called minerals.

5.At some places, minerals contain a very high percentage of a particular metal and the metal can be profitably extracted from it.

6.The minerals from which the metals are extracted without economical loss are called ores.

7.Aluminium, for example, is the most common metal in the Earth's crust, occurring in most of minerals.

8.However, it isn't economically feasible to extract it from most of these minerals.

9.Instead, the usual ore from which it is profitable to extract it is bauxite - which contains from 50 - 70% of aluminium oxide.