Yes - I got your word play hence my comment. (I favourited your comment). Chemically speaking, the addition of an extra 2 after the oxygen (technically as subscript) makes inert water into one of the more corrosive and volatile compounds out there. Hydrogen peroxide is an aggressive oxidant and is, amongst other things, used in rocket fuel. There are other examples where a change of number makes a significant difference, eg O2 vs O3.
As an aside, if you want a fun chemical experiment take a glass beaker of ordinary granulated sugar and add a couple of drops of concentrated sulphuric acid. The acid strips water out of the sugar leaving a tower of carbon.