Amino
Acids(http://www.chemie.fu-berlin.de/chemistry/bio/amino-acids.html)
Listing of amino acids, abbreviation, linear structure and 3-D molecular
model (German labels).
Standard
Atomic Weights of the Elements 2003(http://web.mit.edu/5.112/www/Fall04/pdfs/PeriodicTableList.pdf) (61 KB)
The Commission on Atomic Weights and Isotopic Abundances (CAWIA),
part of the International Union of Pure and Applied Chemistry (IUPAC),
provides the latest measures of evaluated atomic weight and isotopic
abundance data.
Conversion Tables
Online
Conversion(http://www.onlineconversion.com/)
Converts more than 5,000 units and 50,000 conversion measures related
to length/distance, temperature, speed, volume, weight/mass, area,
force, power, energy, pressure, etc.
Digital
Dutch(http://www.digitaldutch.com/unitconverter/)
Converts area, bits/bytes, density, energy, force, length, mass,
power, pressure, speed, temperature and volume units.
Periodic Table
Chemicool(http://www-tech.mit.edu/Chemicool/index.html)
Quick pick an element from the colorful periodic table. Each element’s
record includes general properties, states, energies, oxidation
and electrons, appearance, reactions, conductivity and abundance
information.
Web
Elements(http://www.webelements.com/)
The first periodic table on the Web that provides essential background
information; data on the element’s crystallography, electronic,
physical, and nuclear properties; isolation; usage; and its compounds.
Images of the element are available when possible.