A student claims that the reaction of hydrogen and oxygen to form hydrogen peroxide is evidence supporting the claim that mass is conserved in a chemical reaction. The chemical equation the student uses for the reaction is H₂ + O₂ --> H₂O₂. Does this evidence support the claim? Why or why not?
Yes, it supports the claim because all the elements in the reactants appear in the product.
No, it does not support the claim because it is not a closed system.
Yes, it supports the claim because the reaction equation is balanced.
No, it does not support the claim because the reaction equation is not balanced.