What’s the most interesting fact you found out at school? :)

Question: What's the most interesting fact you found out at school? :)
- Keywords:
  fact,
  interesting,
  school
Asked by robyn to Cathy, Jaz, Mark, Roma, Rory on 16 Jun 2014.
- Cathy Fraser answered on 16 Jun 2014:
  
  That flour can explode!
- Roma Agrawal answered on 16 Jun 2014:
  
  That you can microwave grapes and create sparks!
- Mark Greaves answered on 16 Jun 2014:
  
  That you can make a model volcano using vinegar and bicarbonate of soda
- Jaz Rabadia answered on 16 Jun 2014:
  
  That a potato could power a light bulb !
- Rory Hadden answered on 17 Jun 2014:
  
  Learning that potassium will burn if you add it to water!

Question: What's the most interesting fact you found out at school? :)