CHEMISTRY: One man’s rust is another student’s lesson in chemistry! From Wednesday – here’s the lecture on oxidation numbers. Lots of good practice at the end on this one. Need help? Don’t forget the practice at sciencegeek.net. Go to sciencegeek.net
Good luck studying for the Chemical Formulas & Memorization quiz tomorrow! You need to know: polyatomic ions, monatomic ions (but you can get these off the periodic table), acids, and the chemical names and formulas of common substances. That’s a lot!