Quote (mikeyp1122 @ Sat, Dec 13 2008, 11:00pm)
http://www.youtube.com/watch?v=l9z5-mJ8NZk
another very cool one raw sodium is pretty damn dangerous if you search big chunks of sodium actually explode upon contact w/ water
as you move further down the periodic table, the 1st group becomes more reactive with water. Just as potassium is more reactive than sodium, cesium and rebinium are way more reactive. You can also find these videos on youtube. Much larger explosions with much less material.
good ole chemistry.