NIST Reference on Constants, Units, and Uncertainty background information for nonexperts on Fundamental Physical Constants and a database of physical constants searchable by name; also organized into categories such as universal, electromagnetic, atomic & nuclear, physico-chemical, and frequently used. Includes information on the International System of Units (metric system), and the Uncertainity of Measurement.
NIST Standard Reference Data - Online Databases - Critically evaluated data including properties, dielectric constants, equation of state, fluids, heat capacity, hydrocarbons, LNG; mixtures, natural gas, petrochemical, phase equilibria, thermal conductivity, thermodynamics, thermophysics, transport property, viscosity.
Conversion of Units for units used by chemists. Includes conversion of temperatures between the standard units of measurement.
Periodic Table from the Chemistry Division of Los Alamos National Laboratory.
Periodic Table of Videos includes information on all 118 elements arranged in the format of the periodic table. Click on an element to view information about it and to view the video on that element. Some of the elements include demonstrations with explosions that could not be done safely in a normal classroom setting.
WebElements periodic table (from University of Sheffield). Winner of many awards; perhaps the best on the WWW.
Guides to Web Resources
Chemistry.org from the American Chemical Society. News items involving chemists or chemistry and features for professional chemists and ACS members. Includes a special section for educators and student.
ChemDex from the University of Sheffield. A searchable directory of chemistry resources on the WWW organized into categories. Information on jobs, people, and more.
chemsoc from the Royal Society of Chemistry and around 30 national chemical societies. Information on careers in chemistry, chemistry education, study resources for chemistry students, links and an animated periodic table of the elements.
ChemWeb.com many of the resources are free, but access is restricted to registered users.
San Antonio College Library, 1819 Main Ave., San Antonio, TX 78212 Located in the Moody Learning Center (MLC) building, floors 2 - 5 Reference Desk: (210) 486-0554 * Send Email Library interior & exterior photos by: Leonard Ziegler, SAC photographer