You do not add electrons to oxygen to make water. If you add electrons to oxygen you create ions. O and 2 elections would become a O^(-2) ion
You make water by combining oxygen and hydrogen atoms to a single molecule.
It can be the case that you have dissolved hydrogen ion. H^(+) and that react with oxygen and the electrons come from another source but you create water will oxygen, positive hydrogen ions, and electrons.
It does not.
You do not add electrons to oxygen to make water. If you add electrons to oxygen you create ions. O and 2 elections would become a O^(-2) ion
You make water by combining oxygen and hydrogen atoms to a single molecule.
It can be the case that you have dissolved hydrogen ion. H^(+) and that react with oxygen and the electrons come from another source but you create water will oxygen, positive hydrogen ions, and electrons.