METALS
Obtaining Metals
SURFACE MINES
UNDERGROUND MINES
When the Metals are close to the earth's surface
If they are deeper under the surface.
Classifying metals
then metals are separated into
Ore (useful metals)
Gangue (useless metals)
It's taken into Ironworks and undergoes physical and chemical processes
There are two types of metals
Ferrous metals
Non ferrous metals
Their main component is iron
Their main component isn't iron
Properties of metals
They are good electrical thermal and acoustic conductors
They are ductile and malleable
They are tough
They melt at high temperatures so they can be also be used for welding
They expand when temperature rises and contract when it cools
Some are magnetic
Most of them rust when they enter in contact with oxygen
They can be recycled and reused
some of them are toxic for the enviroment
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