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. And here ...

It happens all over the periodic table. The chemical symbol for lead is Pb. For mercury, Hg. For antimony, Sb. My chemistry teacher in high school cracked up every time she referred to the symbol for ...

In honor of scientist and astronomer Nicolaus Copernicus (1473-1543), the discovering team have suggested the name "copernicium" with the element symbol "Cp" for the new element 112. In honor of ...