For your Friday entertainment, I am posting a couple of videos from my favorite chemists. These examples show slow motion views of some well-known chemical reactions.
The Iodine Clock
[youtube http://www.youtube.com/watch?v=KWJpKNQfXWo?feature=player_embedded&w=640&h=360]
Copper Sulfate in Slow Motion
[youtube http://www.youtube.com/watch?v=jxoHB_sTkI8?feature=player_embedded&w=640&h=360]
See more of these at the Periodic Table of Videos