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 ...

Actinides are a group of heavy, radioactive elements that include uranium, plutonium, americium, curium, berkelium and ...

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 ...

A discovery by UCLA organic chemists may one day put catalytic converter thieves out of business. In new research, they've ...

A chemical compound is a pure chemical substance consisting of two or more different chemical elements that can be separated into simpler substances by chemical reactions. Chemical compounds have a ...

The sequel to Theodore Gray's acclaimed chemistry iPad app The Elements leads you into the wonderful world of molecules. Michelle Starr is CNET's science editor, and she hopes to get you as enthralled ...