Man and metal

 

Man and metal

The history of civilization is linked to minerals, where man took a great step with the discovery of every new mineral and his capabilities to overcome difficulties in life increased when he was able to bend and form minerals

Common metals

Iron, copper, and aluminium are among the most widely distributed metals

Alloy

  Alloy: It is a mixture of two or more metals

For example

Bronze is a mixture of copper and tin

Steel: It is a mixture of iron and carbon

Metal properties:

Metals differ from each other in many properties, but they share common properties such as

Power

Luminosity and darkness

Tensile strength

Good conductivity of heat and electricity

 

 

 

Metal uses

Iron:

The most widely used metal; the Nubians used it in ancient Meroe 2600 years ago and is used in the manufacture of things from needles and razors to ships, cars, locomotives and construction works

Aluminium is the second most widely used metal and is used in the manufacture of aircraft and electrical wires. It is also used in buildings, windows, doors and cooking utensils

Copper

It is widely used because of its flexibility, corrosion resistance and ductility. It is used for the manufacture of thin wires, and because it is the best conductor of electricity after silver. It is widely used in electrical industries.