Originally Posted by
SKA
Hah I'm kind of an evil scientist myself. At least it's one of my many personalities ^^
A fun experiment would be making Hydrogen.
Buy some alluminium foil or (better) pure alluminium dust, buy some draincleaner (Natrium Hydroxide; NaOH)
-Dissolve some NaOH draincleaner in water, then add alluminium foil. This makes a reaction which releases Hydrogen gas
This should be done in a glass or plastic bottle. Right after the alluminium foil is added, place a balloon over the bottleneck. This way you can catch up the hydrogen in the balloon.
The balloon will float, better than a helium balloon. Also it is an extremely explosive balloon. So be carefull.