The Interactive Guide to the Periodic Table of Elements is a guide to understanding the Periodic Table, as well as a comprehensive interactive reference of the elements themselves. Students, teachers, or anyone interested in science can now experience the Periodic Table like never before. Popups, videos, slideshows, and cross-referenced links help you find what you are looking for quickly and make learning about the world in which we live fun and engaging. Quickly see the number of neutrons, atomic weight, melting and boiling point, density and even a brief history about the discovery of each element.