A chemical substance is a form of matter having constant chemical composition and characteristic properties. Some references add that chemical substance cannot be separated into its constituent ...

A chemical element is one of those squares on the periodic table that adorns many a classroom wall. Sure. But what is an element really? It is a more subtle question that you might realise. To get to ...

A pinch of arsenic, a dash of krypton, a soupçon of tantalum, and a whole load of copper—these are just some of the 76 chemical elements that go into making modern automobiles, according to 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 ...

Everything around us is made of molecules. Molecules are in constant motion, and when they collide just right, chemical reactions can occur! Chemical reactions can happen fast or slow, and the ...

The body is, for all intents and purposes, an extraordinarily complex machine. This requires a multitude of parts all working together in complicated relationships from the micro- to macromolecular ...

If you would like to learn more about the IAEA’s work, sign up for our weekly updates containing our most important news, multimedia and more. The IAEA has developed novel theoretical calculation ...