Topic
Corrosion
2 questions tagged Corrosion — spanning every one of the seven Ws.
why
Why does iron rust more readily than some other metals?
Iron rusts because it reacts with oxygen and water to form iron oxides. Unlike metals that form protective coatings, rust is porous and lets corrosion continue.
ChemistryCorrosion
why
Why does aluminum not rust in the same way iron does?
Aluminum quickly forms a thin layer of aluminum oxide that seals the surface from further attack. That protective layer prevents the runaway corrosion seen in rusting iron.
ChemistryCorrosion