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}
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Which of these does not illustrate substances reacting to form new substances?
Possibilities:
- 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}

H_{2}O(l) -> H_{2}O(g)