An example of a chemical change that takes a long time to occur is the rusting of iron.
Rusting of iron occurs when a piece of iron is exposed to oxygen and moisture. The process takes a long time before evidences of its occurrence becomes visible.
Recall that a chemical change is irreversible and involves recombination of atoms. Rusting is a chemical change because a new substance is formed which is hydrated iron III oxide.
Learn more: https://brainly.com/question/928042
