When classifying as to whether an atom, molecule, element, or compoud, what would the following be? -H20 -H2 -C6H12O6 (glucose) -N2 I guess i am kind of confused as to the difference between molecules and compounds. I thought water was a molecule, but according to the definition of a compound which says two or more kinds of atoms chemically combined would water be a compound? Is this the same with glucose? Thanks for helping a confused person!