describe how oxidation and reduction involve electrons, change oxidation numbers, and combine in oxidation…

Brief Explanations:

Oxidation is the loss of electrons, which increases the oxidation - number of an atom. Reduction is the gain of electrons, decreasing the oxidation - number. In oxidation - reduction reactions, oxidation and reduction occur simultaneously. One species is oxidized (loses electrons) while another is reduced (gains electrons) to maintain charge balance.

Answer:

Oxidation involves loss of electrons and an increase in oxidation number. Reduction involves gain of electrons and a decrease in oxidation number. In oxidation - reduction reactions, they occur together with one substance being oxidized and another being reduced to conserve charge.