There are two types of numbers that appear in chemical equations. In a complete chemical equation, the two sides of the equation must be present on the reactant and the product sides of the equation. ![]() The same atoms that were present in the reactants are present in the products-they are merely reorganized into different arrangements. In chemical reactions, atoms are never created or destroyed. Explain the role of the Law of Conservation of Mass in a chemical reaction.Įven though chemical compounds are broken up and new compounds are formed during a chemical reaction, atoms in the reactants do not disappear, nor do new atoms appear to form the products.Balance a chemical equation when given the unbalanced equation.Explain the roles of subscripts and coefficients in chemical equations.
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