explore the chemical elements through this periodic table

the definitive online periodic table reference site including technical data, and photographs and descriptions of thousands of samples of the chemical elements.

interactive periodic table showing names, electrons, and oxidation states. visualize trends, 3d orbitals, isotopes, and mix compounds. fully descriptive writeups.

advancing excellence, connecting chemical scientists and shaping the future of the chemical sciences for the benefit of humanity.

home page of interactive learning paradigms, incorporated which specializes in custom e-learning solutions, consulting, advertising and retail sales.

everything for chemists: from the periodic system in online and pdf versions, to online calculators and free software for chemists. english-croatian chemistry dictionary and glossary is always at hand.

chem4kids.com! the site that teaches the basics of chemistry to everyone! tutorials on matter, atoms, elements, the periodic table, reactions, and biochemistry.

are you wondering what's new and what we're working on at science notes? here's a running update.

an online resource for chemistry students where they can easily learn about various fields of chemistry through simple aritcles and pictures

iupac serves the international scientific endeavor in the dual function of a basic science and a mission-oriented union. the union is in a unique position