LibGuides: Chemistry & Biochemistry: Tools

American Elements
Clicking on the abbreviation for an element retrieves information about the element, with key terms highlighted & linked to other parts of the site. Sections include Properties, Safety Data, Products, Research, Isotopes.
Periodic Table Live!
Explore a broad range of information about the elements, their reactions, their properties, their structures, and their histories.
PTable
PTable "outsources" information content to Wikipedia, focusing on interactive and dynamic functions that enhance opportunities "to make Mendeleev's creation come alive."

ChemIDplus
Chemical information with searchable synonyms, structures, and formulas from the NLM (medical) databases. Includes properties and toxicity data.
ChemSpider
Free chemical structure database providing text and structure search access to over 29 million structures from hundreds of data sources.
ChemSynthesis
Database of substances with their synthesis references and physical properties such as melting point, boiling point and density.
NIST Physical Reference Data
Elemental & spectroscopy data, physical constants, etc. From the National Institute of Standards and Technology.
PubChem
Search by substance, compound, bioassay on small molecules. From the National Center for Biotechnology Information (NCBI).

Martindale's Calculators Chemistry Center
Links to calculators for almost everything you can imagine.
Unit Converter
Easily convert properties such as volume, speed, pressure, mass, force, energy, density, etc. from/to a wide range of measures.