H2O's full name, based on chemical nomenclature, is dihydrogen oxide.
While commonly known as water, H2O's chemical formula indicates its composition: two hydrogen atoms and one oxygen atom. This composition leads to the systematic chemical name:
- Dihydrogen: "Di-" means two, and "hydrogen" refers to the two hydrogen atoms.
- Oxide: This indicates that oxygen is combined with another element (in this case, hydrogen).
Therefore, combining these parts gives us dihydrogen oxide. An alternative chemical name, less commonly used, is oxidane.