2 H2O2(1)→ 2 H20(l) + O2(g) The exothermic process represented above is best classified as a (A) physical change because a new phase appears in the products (B) physical change because O2(g) that was dissolved comes out of solution (C) chemical change because entropy increases as the process proceeds (D) chemical change because covalent bonds are broken and new covalent bonds are formed