If the number of atoms in the reactants equals the number of atoms in the products, the equation is blank

balanced

Explanation: Skeletal equations are defined as the equations in which formula are used to indicate the chemicals that are involved in a chemical reaction.

Balance equations are those equations in which stochiometric coefficients are given along with the formula to indicate the chemicals that are involved in a chemical reaction.

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.