By Aaron Rowe March 02, 2008 | 3:48:35 PMCategories: Chem Lab, Chemistry, Video Fiery explosions, beautiful reactions, and hilarious music videos are great reasons to be excited about chemistry. Here are some of our favorites. The British science show Brainiac asked one of the greatest scientific questions of all time: can liquid nitrogen freeze molten iron? 9. Gummy Bear Dies a Fiery Death in