The formula H₂O 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.

Take your pick from this collection of links about elements and the periodic table! Build an element ball ... learn how to correctly name chemical compounds and write chemical formulas. A main goal of ...

See if you can organize the first 25 elements of the periodic table in order in the quiz below. The periodic table as we know ...

Can France claim the first periodic table? Probably not, but a French Geology Professor made a significant advance towards it, even though at the time few people were aware of it. Alexandre Béguyer de ...

With the new formula and experimental energies of chemical bonds ... which is very practical and accurately reproduces both molecules' energies and chemical reactions. The periodic table's most ...