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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 ...

Chemical Portal - Chemistry Online Education

This online unit conversion tool will help you convert measurement units anytime and solve homework problems quickly using metric conversion tables, SI units, and more.

Lenntech designs, builds and installs a wide range of odour treatment, water purification and air filtration products using UV, ozone, Ecosorb, drum filtration. Also cooling towers.

ChemAxon is a company for software development. Programs, Java applets and other Java tools for chemistry, client-server applications, chemical databases.

ChemSpider is a free chemical structure database providing fast access to over 26 million structures, properties and associated information.

Free Online Math Calculators and Converters. Mathematics Calculation is made easier.

Learn about the many significant advancements that chemical engineers have made to enrich our world in the fields of energy, the environment, biomedicine, electronics, food production, and materials.