I don't even remember doing the periodic table at school, it was so long ago. Kinda embarassed that I knew nothing anymore, but now I'm back up to a high-school level at least. Subtley educational, and a lot better than most idle games. Nicely done!
Though I have some level achievments that don't work. I already did the medal check button several times and it didn't help. 9 and 12 are the problem numbers. The volume on teh sound effects is also painfully loud on this. I can't listen to any music when I play this, because my volume is always up too high for it.
There's also some weird as hell stuff gonig on with teh sound effects. I've noticed it'll start playing random ones repeatedly while it's running in the background after a while. It's, kinda scary.