The type of chemical equation that illustrates the conservation of mass during a reaction is known as a balanced equation. In a balanced chemical equation, the number of atoms of each element involved in the reactants is equal to the number of atoms of those same elements in the products. This adherence to the principle of conservation of mass ensures that matter is neither created nor destroyed during a chemical reaction. Consequently, balanced equations are essential for accurately representing the changes occurring in a reaction and for performing stoichiometric calculations in chemistry.