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American Chemical Society

The American Chemical Society is an independent membership organization that represents chemistry professions at all degree levels. Click on “Education” at the top of the page to access information about the latest research findings, careers in chemistry, summer research program, and more.

National Mole Day Foundation

Celebrated annually on Oct. 23 from 6:02 a.m. to 6:02 p.m., Mole Day commemorates Avogadro’s Number, which is a basic measuring unit in chemistry.

NIST Chemistry WebBook

Searchable database of compounds

Periodic Tables:


A Visual Interpretation of the Table of Elements

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