Which of the following is not an element?

arohanui, A chemical element is a chemical substance that cannot be broken down into other substances. A compound is something that can be broken down into its constituent elements. Water is a compound, not an element.

Player #59334546, like an old SNL commercial for Shimmer, water is both a compound and an element. Ancient Greek, Taoism and other old cultures predating chemistry had 4 basic elements in common: earth, wind/air, fire, water.

So why does it have the chemical sign of H2O?

Why was it one of the five elements in the movie, "The Fifth Element?"

of course water IS an element, but not the same kind.