Microscale Gas Chemistry
"The Center for Microscale Gas Chemistry exists for the purpose of establishing safe and convenient methods for generating and manipulating small samples of gases for experiments and study."  An interesting site to browse!  By Bruce Mattson, Creighton University, Omaha, Nebraska.

Chemical Kinetics: Terms and Concepts
James Plambeck's thorough web site covers kinetics of reactions in great detail.

Chemical Kinetics Equilibrium Simulation
Interesting Java applet simulates the equilibrium A + B = C + D. Additional applets may be found here. By Christopher J. Grayce, The University of California at Irvine.

Acid-Base Chemistry
Basic review of acids and bases, with definitions and worked out examples of pH problems involving strong and weak acids and bases and titration. From the Department of Chemistry, The University of North Carolina at Chapel Hill.

A Basic Approach to Body pH
Another approach to pH calculations, describing Peter Stewart's SID ("strong ion difference") concept. The article is aimed at physiological applications. Something different!

Acid-Base Indicators
Acid-base indicators (also known as pH indicators) are substances which change color with pH. They are usually weak acids or bases themselves. By Alan J. Jircitano, Penn State University Behrend College.  Explore Dr. Jircitano's extensive course notes and resources from his homepage here.

Water Structure and Behavior
Detailed description of the water molecule, its solution behavior, and other properties, by Martin Chaplin.

Oxidation Numbers
A handy system for assigning oxidation numbers, with practice problems and answers (error! H is -1 in CaH2). By Donald Robertson, MiraCosta College. More chemistry links from this site can be found here.  One more outline may be found here, by Gwen Sibert, Roanoke Valley Governor's School.

Balancing Redox Reactions Using Half-Reactions
The standard method of balancing oxidation-reduction reactions, and probably the best. From the Leeward and Kapiolani Community Colleges of the University of Hawaii. More oxidation-reduction topics from this site, with practice exercises, can be found here.

ENTROPY and the Second Law of Thermodynamics!
"Entropy measures...the tendency of ENERGY to spread out, to diffuse, to become less concentrated in one physical location or one energetic state." A down to earth discussion about entropy by Frank L. Lambert, Professor Emeritus, Occidental College.

Radioactivity
The Encarta Encyclopedia article. For more historical information about the scientists involved in the discovery of radioactivity, go here, and another good site about Marie Curie can be found here.

Radiocarbon Dating
This site provides access to several sites detailing the uses, history, and methods of C-14 radiocarbon dating techniques and applications.

Nuclear Energy
A good overview from the Microsoft Encarta Encyclopedia. See also the Nuclear Energy Institute in Washington, D.C. and the Uranium Information Centre from Melbourne, Australia. Try Henrik Eriksson's nuclear power plant demonstration here (Java applet - keep the reactor stable when component failures occur!)

Chernobyl: A Nuclear Disaster
"The volcanic-like explosion at the Chernobyl nuclear power station on Saturday, April 26, 1986, was probably the world's largest nuclear accident. Discover the actions that lead to the disaster, how it could have been prevented, and the lasting effect it has had on the local community and the world." Another good site (still under development) among the many Chernobyl sites now available on the Internet is here, and a C & E News 10-year anniversary article may also be found here.

National Ignition Facility
"When completed in 2009, NIF will focus the intense energy of 192 giant laser beams on a BB-sized target filled with hydrogen fuel �?fusing, or igniting, the hydrogen atoms' nuclei."

HiPER
"HiPER is a proposed European High Power laser Energy Research facility dedicated to demonstrating the feasibility of laser driven fusion as a future energy source."

ITER
"ITER is a joint international research and development project that aims to demonstrate the scientific and technical feasibility of fusion power."

Matter at Zero Kelvin: The Bose-Einstein State
"Bose-Einstein condensation in a gas: A new form of matter at the coldest temperatures in the universe."  Very interesting tutorial about the state of matter at near absolute zero.  Among the many great tutorials at Physics 2000.

Equation Balancers
Here are several online chemical equation balancers by Dave, Adomas, and WebQC.