Evidence of a Chemical Reaction

http://www.youtube.com/watch?v=hVK9Om4wzBM
When 91% alcohol is mixed with a bromine pool tablet. It is first shaken a little bit. After red liquid starts to appear from the bottom and starts to boil to a red liquid. After it dies back down to a yellow liquid and the bromine plate used up.
 http://www.youtube.com/watch?v=8ypUVpwgcAA&feature=related
A piece of lithium was put into water. Aflame erupted and stopped. Smoke was released.
 http://www.youtube.com/watch?v=896vJj6eWYw&feature=related
Cesium is added to water. Which produces a orange "firework".
 http://www.youtube.com/watch?v=qRmNPKVEGeQ&NR=1
 Potassium is added to water which creates a pink is flame that last a few seconds. It then burns out. 
 http://www.youtube.com/watch?v=vJslbQiYrYY&NR=1
Sodium and potassium are added to water which create a huge explosion. That happens over and over again until its stops.
 http://www.youtube.com/watch?v=_Pk6s1MbszA&feature=related
In this reaction a gummy bear is added to sodium chloride which produces a small flame, type thing at the bottom of the test tube  while the gummy bear is glowing red, it quickly expanded to the whole tube.
 http://www.youtube.com/watch?v=zrNA8-eipGE&feature=related
This experiment was my favorite. When food coloring, salt crystals, and the mineral turpentine wee added to water it created a blue glow just like a light bulb.