Stoichiology is the branch of chemistry that deals with the quantitative relationships between reactants and products in chemical reactions. There are several synonyms for this term, including stoichiometry, reaction stoichiometry, and chemical equation calculations. These terms all refer to the same concept of using mathematical equations to quantify the mass and mole relationships between reactants and products in a chemical reaction. Other related terms include balancing equations, mole ratio calculations, and stoichiometric coefficients. These concepts are essential for understanding chemical reactions and are used extensively in chemical industries for the production of various chemicals.