Corrosion

Which of the four materials (aluminum toy, iron nail, copper pipe, gold ring) is likely to be in the best condition after many years? Explain your reasoning.

What is corrosion and how does it affect metals when they are exposed to air and water?

Why does the iron nail corrode faster than the aluminum toy, copper pipe, or gold ring?

How does aluminum oxide protect aluminum from further corrosion?

What is galvanizing and how does it help protect iron from corrosion?