Statement: There are more oxygen atoms on the right side of the arrow than on the left side.
This statement correctly supports the argument that the chemical equation H2 + O2 → 2 H2O violates the law of conservation of matter, as it indicates an inconsistency in the number of atoms before and after the reaction. In this equation, we start with 2 oxygen atoms on the left side (from O2) and end up with only 1 oxygen atom in each water molecule (since there are 2 H2O on the right side, giving a total of 2 oxygen atoms). Thus, the equation adheres to the conservation of matter because there is no increase or decrease in the number of atoms; the overall number of atoms before and after the reaction remains balanced. This highlights the importance of accurately counting and balancing chemical equations to adhere to the law.