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 ...

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 may have noticed that the rock formations are very different colors. The rock formations on the left are from Red Rock State Park in Texas, and on the right is El Capitan Mountain in Yosemite ...

On the far right side of the periodic table, just beneath oxygen, sits a lesser-known group of elements called the chalcogens, or “ore-forming” elements. While sulfur is widely recognized for its role ...

A particular silicon compound that has been sought by scientists for decades has been created by two separate teams of ...