what js rust and how is created
In: Chemistry
Rust is iron oxide. Most metals that are exposed to oxygen in the air will react with it and “rust” in some way, though it’s not called rust unless the metal is iron specifically. Some metals, like aluminium and copper, the oxide (rust) covers and insulates the rest of the metal from air, so it forms like a protective layer. But iron rust is porous, and absorbs moisture and oxygen, so more and more of the iron rusts.
Examples of other oxides: carbon dioxide, silicon oxides (rocks, sand), aluminium oxide (sapphire, ruby), nitrous oxide.
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