While generally -2, the "number" associated with this process for oxygen is -1 in peroxide.
Ozonolysis of alkenes is one type of this class of reactions, as is the transformation of NADH to NAD+. The addition of chromic acid to alcohols converts them to carboxylic acids and ketones in this type of reaction. A common and powerful reagent in this type of reaction is potassium permanganate, and in combustion reactions hydrocarbons undergo this process. While generally -2, the "number" associated with this process for oxygen is -1 in peroxide. For 10 points, name this type of reaction, which is accompanied by a loss of electrons and often happens simultaneously with reduction.
Ozonolysis of alkenes is one type of this class of reactions, as is the transformation of NADH to NAD+.
oxidation [Prompt on redox.]