Every chemical compound has a formula, which cannot be altered when balancing chemical equations.
truefalse

If I understand the question correctly, I think the answer is true.  My reasoning is that each formula for the molecules used in a reaction are set and can't be modified to make it easier to balance or else the reaction would change fundamentally.
an example of this is H₂+1/2O₂⇒H₂O.  You can't change the H₂O to H₂O₂ to make the reaction cleaner. Water and hydrogen peroxide are two different chemicals and therefore can't be interchanged with out changing the fundamental qualities of the reaction

Fine out you self hx