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Chemical kinetics

Chemical kinetics, also known as reaction kinetics, is the study of rates of chemical processes. Chemical kinetics includes investigations of how different experimental conditions can influence the speed of a chemical reaction and yield information about the reaction's mechanism and transition states, as well as the construction of mathematical models that can describe the characteristics of a chemical reaction.

Wiktionary

chemical kinetics

n. (context chemistry English) the study of the reaction rates of chemical reactions, especially as a means of elucidating reaction pathways or mechanisms