This phenomenon was first observed by Aristotle and named after Erasto Mpemba. The Mpemba Effect. It is still unknown why sometimes hot water can freeze faste

This phenomenon was first observed by Aristotle and named after Erasto Mpemba. The Mpemba Effect. It is still unknown why sometimes hot water can freeze faster than cold water. http://en.wikipedia.org/wiki/Mpemba_effect http://en.wikipedia.org/wiki/Mpemba_effect A definitive answer would provide profound glimpses into subatomic particle theory and quantum mechanics of how heat travels from one particle to another.