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It depends on the type e.g. iron comes from an ore which is dug out of the ground where as steel is a mixture of iron and a tiny amount of carbon, this is known as an alloy.

An ore is dug out of the ground and is the melted in a furnace, then to remove the oxygen carbon is added as this new bond of carbon and oxygen is stronger then iron and oxygen, this then separates in the furnace at different levels and can be poured off.

Imagine it like oil in water the oil rises to the top.

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14y ago

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