What Is a Chemical Element?
07/03/2013 04:57
By Anne Marie Helmenstine, Ph.D., About.com Guide
A chemical element, or an element, is a material which cannot be broken down or changed into another substance using chemical means. Elements may be thought of as the basic chemical building blocks of matter. Depending on how much evidence you require to prove a new element has been created, there are 117 or 118 known elements. [Read more] ...