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 defined as the degradation of materials by chemical reaction with the environment in which the material resides.. This is because of metal oxidation. As metals have a tendency to return to their natural state, it is a natural process which produces either salt or oxides.