Chemical kinetics is the study of the rates of chemical reactions and the factors that influence those rates. It quantitatively examines how quickly reactants are converted into products, differentiating between the speed of the overall reaction and the specific steps that make up the reaction pathway. Key concepts include the rate law, which relates the reaction rate to the concentrations of the reacting species, and the reaction mechanism, which details the elementary steps involved. The field also investigates the theoretical aspects of reactions, particularly the concept of activation energy—the minimum amount of energy required for reactants to transform into products—and how temperature or catalysis can modify this energy barrier to accelerate the process.