# Is Hydrogen Dioxide Water? If so, what is the chemical compound and differences between H2O and H2O2? [duplicate]

Four of us were debating what the actual compounds and terms (scientifically) for water. H2O we all agreed upon until one person said, "..yes and its Hydrogen Dioxide". Myself and 1 of the four challenged that answer by saying, "One does not drink Hydrogen Dioxide"! This turned into an half an hour debate and furious flipping through the internet, (which DID NOT provide a clear and concise answer). Please help make this clear.

• "Please help make this clear". The "di-" prefix means "two". Given that water is $H_2O$ (Two $H$s and one $O$), I think you are quite capable of clearing things up yourself ;) – paracetamol Sep 14 '17 at 13:42
• The very first hit you get by typing 'hydrogen dioxide' in Google yields the answer you were looking for. – Bdrs Sep 14 '17 at 14:16
• chemistry.stackexchange.com/questions/53533/… – Mithoron Sep 14 '17 at 14:29