2H2 (g) + O2 (g) ® 2H2O(g)
reactants product(s)
The above equation is an example of a balanced chemical equation.
A balanced chemical equation shows the same type and
equal number of atoms
and equal charges on both sides
A chemical equation must be balanced because atoms can neither be created nor destroyed,
which follows from the law of conservation of mass.
So
it would be wrong and misleading for a chemical balance sheet which is what a chemical equation is, to show the
creation or destruction of
atoms!!