Got Milk? They make good fire bombs.

Mystery of the exploding custard factories explained.

Science experiments in school have always been boring. Uninspiring teachers and rude attenders make it real hell. I have always felt lost, bored, clueless, an intense desire to burn the place down etc etc...But in a quest to make experiments a little entertaining in school, a teacher demonstrated the hidden explosive power of innocuous looking milk powder(see pics in link). He sprinkled milk power on an open flame which made the powder explode into a big fireball several meters high.

Apart from the entertainment value and the noble agenda of attracting bright kids into science, this demonstration also explains the risk of storing of powdered material in large scale and the fact that reactivity of materials is related to its surface area. Milk (custard powder also) is not combustible in liquid form, but when dried and powdered more of its area is exposed to air making it combustible.

See the explosive experiment in the series of pics in this link

http://observer.guardian.co.uk/flash/page/0,,1927850,00.html