Chemistry is the study of matter and energy and the interactions between them. Get facts for the elements in the periodic table. Find chemistry demonstrations and experiments and science fair projects. Get chemistry homework help with worked example problems and a glossary. Grow your own crystals. Browse molecular structures. Find articles on chemistry. Find out how things work and get answers to common science questions.

3D Stereoscopic Displays from Planar. Superior 3D Solutions for Professional Markets.

Bruker AXS designs and manufactures analytical X-ray systems for elemental analysis, materials research and structural investigations. Bruker AXS’ innovative solutions enable a wide range of customers in heavy industry, chemistry, pharmacy, semiconductor, life science and nanotechnology.

CRAIC designs advanced ultraviolet-visible-near-infrared microspectrophotometer, UV microscope, NIR microscope, Raman microspectrometer, microscope spectrophotometer and microscope spectrometer solutions for non-destructive analysis of microscopic samples by transmission and fluorescence and reflectance and polarization microspectroscopy.

Bob's Rock Shop is the net's first 'zine for mineral collectors, rockhounds and lapidary hobbyists, now joined online by Rock&Gem magazine. Among the features to browse here the free use, form-accessible 'Rock Trader' classified ads; downloadable freeware and shareware software for rockhounds; the 'Rock Net' online bulletin board; several collections of entertaining and informative mineralogical articles and essays; a collecting site catalog for the United States and Canada; extensive lists of upcoming shows, US clubs, and links to kindred sites; rockhound tailored visitor information for Tucson, Arizona, including the annual Tucson Gem and Mineral Show; and much more.

Crystallography