OXIDATION AND REDUCTION REACTIONS. Oxidation and reduction is an important topic for understanding chemistry. It serves as the foundation for building knowledge on the behavior of metals, nonmetals,organic chemistry and general periodic table characteristics. The definition of oxidation and reduction has different meanings based on different terms. The following terms for the definition of reduction and oxidation includes the following 1. Addition of oxygen 2. Removal of hydrogen 3. Addition of electronegative element 4. Addition and Removal of electrons ADDITION OF OXYGEN The addition of oxygen to a substance is known as oxidation. Because oxygen is one of the earlier know reactive elements. So when it combine with substances, the substances were said to be oxidized because oxygen was added to it. Consequently,...