The formula Hâ‚‚O shows that water is made from two atoms of hydrogen (H) bonded to one atom of oxygen (O). Katie: Time for some science. And today it's a chemistry classic, the periodic table. And here ...
Iron makes up about 5 per cent of the Earth's crust and is the most abundant element in the whole Earth (about 35 per cent).
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback