question about Al .Aluminium reacts rapidly with oxygen in the airWhy then are aluminium saucepans and foil seemingly inert in kitchens?
Unlike iron that produces soft rust that can be easily scraped off, aluminum oxidizes to for a tenacious protective film that inhibits further oxidationIf the film is scratched a new film quickly formsThe aluminum film renders the foil or saucepan nearly inert (although many avoid boiling acidic foods in aluminum pots and pans because of concerns about ingesting too much aluminum).
