GENERAL!
This link takes you to the Kahn Academy. The Khan Academy is
a not-for-profit 501(c)(3) with the mission of providing a world-class education
to anyone, anywhere. Their mission is to become a free classroom for the
world. Scroll down to "Chemistry" for tutorials on all kids of chemistry
topics. http://www.khanacademy.org/
CHEMISTRY BASICS!
This link takes you to a webpage with worksheets to help you
practice scientific notation and conversion. The great thing is that you
can also download answer sheets to check yourself. http://scidiv.bellevuecollege.edu/jm/c140/c140%20f06/worksheets.htm
ATOMS!
This link is a great tutorial on electrons in atoms. It even
has little animations and interactive aspects! http://www.colorado.edu/physics/2000/quantumzone/index.html
Then it goes on to discuss the quantum mechanical model http://www.colorado.edu/physics/2000/elements_as_atoms/index.html
Cool periodic table! Click on the symbol in the PT and it shows
the spectrum and the electrons in energy levels
http://www.colorado.edu/physics/2000/applets/a2.html
EQUILIBRIUM!
This is a website that quizzes you on the effect of different
disturbances on equilibrium position. http://www.sciencegeek.net/Chemistry/taters/LeChatelier.htm