Originally Posted by
trphil:
“The chemical formula of Hydrogen is H2 and the chemical formula of Oxygen is O2, burning stuff is basically oxidising it so two molcules of Hydrogen combine with one molcule of Oxygen to make 2 molcules of water (H2O).
”
Sorry, need to you correct you a bit on this one!
H is the chemical symbol of hydrogen and O is oxygen. Oxygen in it's elemental form (ie what we breathe, what composes parts of the earth and other masses, including living things) is symbolized as O2, where two molecules are bound together (aka diatomic).
With water, you need two H bonded to one O, therefore the symbol is H2O. However (and forgive me as I can't recall any more why this is!), I recall from my chemistry days the true formula for water should be HOH (hydrogen hydroxide). I just cant' remember the covalent bond rules that explain this, it's been years since I last took chemistry.