I’m currently working on using the Parallax Propeller chip for various projects including a low cost INS solution, or hardware dedicated simulation tool. We saw see what happens. details to come……..
A Quiz to check your skills
http://antoine.frostburg.edu/chem/senese/101/tutorials/
This tutorial is pretty good, but the website background makes it hard to read. I recommend taking your mouse and highlighting the text you want to read
http://library.thinkquest.org/3310/user/lographics/textbook/index.html
Chemical Reactions
http://www.101science.com/Chemistry.htm#Reaction