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Explain Why The Reaction Of Oxygen With Iron Is A Problem But The Reaction Of Oxygen With Aluminum Is Not?

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When iron is exposed to air and moisture, it corrodes or rusts, forming hydrated iron (III) oxide. Rust can seriously damage iron structures because it crumbles and exposes more iron to the air. This leads to more breakdown of the iron and eventually can destroy the structure. Aluminum reacts with oxygen to form aluminum oxide. Unlike rust, aluminum oxide adheres to the aluminum surface, forming an extremely thin layer that protects the aluminum from further attack.
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Anonymous answered
When iron is exposed to air and moisture, it corrodes or rust, forming hydrated iron (III) oxide. Rust can seriously damage iron structures because it crumbles and exposes more iron the the air. Aluminum reacts with oxygen in the air to form aluminum oxide. Unlike rust, aluminum oxide adheres to the aluminum surface, forming an  extremely thin layer that protects the aluminum from farther back.

From Integrated Physics and Chemistry Book, Glencoe Science

Major in Physics

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