What is H2O?

Water. Hydrogen gas is two hydrogen atoms bonded together. H2. . Oxygen gas is two oxygen atoms bonded together. O2. . Water, is one oxygen atom bonded to two different hydrogen atoms, H2O. When atoms are bonded together, (H2, O2, H2O etc.) we call the total structure a molecule. read more

Water is an interacting society, not a molecule, and it is a society of related molecules, not just H2O; among those molecules H2O is just the most prominent family, not a single kind of molecule; and light water (what we usually think of as H2O) is just the most prominent branch of that family. read more