13 Experiments I had to try (Safety precautions in Comments!)

Here are 13 Experiments I had to try. Many of them are dangerous, so don't try any at home without proper training, supervision, and safety precautions.
Experiment List:
1. How to get rid of smoke (humorous--don't actually get rid of smoke this way!)
2. Best Sodium Experiment EVER (don't try...dangerous)