Question

_________ is defined as a process where materials, usually metals, deteriorate as a result of a chemical reaction with air, moisture, chemical, etc. For example, iron, in the presence of moisture, reacts with oxygen to form hydrated iron oxide.

Answer 1

Corrosion is defined as a process where materials, usually metals, deteriorate as a result of a chemical reaction with air, moisture, chemical, etc. For example, iron, in the presence of moisture, reacts with oxygen to form hydrated iron oxide.

$4Fe+3O_2+n{H}_{2}O\to \underset{Hydratedironoxide}{2F{e}_2{O}_3.n{H}_{2}O}$

This hydrated iron oxide is rust.