Chemical reactivity describes the ability of a substance to undergo a chemical reaction with other substances. There are many synonyms for this term, including chemical activity, chemical responsiveness, chemical reactivity potential, and chemical susceptibility. These terms refer to the ability of a substance to react with other substances, either through changes in oxidation state, chemical bonding, or formation of new compounds. The term chemical affinity is another synonym for chemical reactivity, describing the attraction between two substances that is responsible for their tendency to react with each other. Regardless of the term used, describing the reactivity of a substance is important in understanding its behavior in chemical reactions and its potential for use in various applications.