Which of these does not illustrate substances reacting to form new substances?
H_{2}O(l) -> H_{2}O(g) 2H_{2} + O_{2} -> 2H_{2}O 2Na + Cl_{2} -> 2NaCl 6CO_{2} + 6H_{2}O -> C_{6}H_{12}O_{6} + 6O_{2}
A B C D