Everything we can see and touch, and quite a lot that we can’t as well, is made of tiny particles called atoms. Some substances, like particles of this iron, contain only one kind of atom. Iron is an ...

If you're a student hoping to conquer chemistry—or just like chemistry as a hobby—web site Ptable gives you a browser based periodic table that lets you view element information, properties, orbitals, ...

In this video excerpt from NOVA's "Hunting the Elements," New York Times technology columnist David Pogue investigates chemical reactions involving sodium. Find out how the electron configuration of ...

You’re probably familiar with the periodic table of elements, which adorns the wall of every high-school science classroom. This comprehensive table charts elements by categories and characteristics, ...

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 ...