When iron combines with the oxygen in the air it becomes rusty.is rusting a reversible or irreversible change . explain your answer.?

Rusting is an irreversible change because it involves a chemical reaction between iron and oxygen, resulting in the formation of iron oxide (rust). Once iron has rusted, it cannot be converted back to its original metallic form without undergoing a complex chemical process. The properties of rust are different from those of iron, further confirming that rusting cannot simply be reversed.