Final answer:
When iron rusts, it is being oxidized. The process involves the oxidation of iron to form iron (II) ions, which further react with water and oxygen to produce rust.
Step-by-step explanation:
When iron rusts, it is being oxidized. The process of rusting involves the oxidation of iron to form iron (II) ions, which then further react with water and oxygen to produce hydrated iron (III) oxide, known as rust. Rusting is an example of corrosion, which is the deterioration of metals through redox processes.