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 ...

There are lots of different substances but only just over a hundred elements. An element is a substance that is made up of only one kind of atom. The atoms in a particular element are the same as each ...

The periodic table is like a map that organizes elements based on their atomic structure and properties. It helps scientists and students study and understand the vast variety of elements and how they ...