1. Briggs-Rauscher reaction
2. Reaction of Sodium & Chlorine
3. Landolt reaction
4. Magnetic Levitation
5. Colour changing dry ice
6. Supercooling
7. Superheating
8. Ship floating on heavy gas
9. Viscosity
10. Superabsorbent polymer
http://fogonazos.blogspot.com/2008/03/top-10-amazing-laboratory-reactions.html