Which of the following equations shows a chemical change?

Responses

C2H5OH(l)→C2H5OH(g)
C3H8+5O2→3CO2+4H2O
NH3(g)→NH3(l)
H2O(s)→H2O(g)

The equation that shows a chemical change is: C3H8+5O2→3CO2+4H2O