Now that we are familiar with the structures of single chain macromolecules, we are in a position to look at some of the interactions of macromolecules with other macromolecules and with smaller molecules.
Corrosion on exposed metal. Corrosion is a natural process, which converts a refined metal to a more stable form, such as its oxide, hydroxide, or sulfide. It is the gradual destruction of materials (usually metals) by chemical and/or electrochemical reaction with their environment.
Corrosion is the damage that is caused when something is corroded. 1  Zinc is used to protect other metals from corrosion. 2  Rust or ferric oxide is a product of corrosion. 3  When metals are exposed to atmospheric conditions, they react with air or water in the environment to form undesirable compounds.