Lead

Watch to the end for the best (Cesium!)! A wonderful representation of the alkali metals and their accurate reactivity with water. unlike brainiac, who did infact use explosives in their episode for rubidium and cesium. Very worth a watch.
All credit for this video goes to the makers of physical science, and openlearn.open.ac.uk. Link here:

http://openlearn.open.ac.uk/mod/resource/view.php?id=294420

Made available by Creative commons attribution.
Footage from:
“Physical Science: The Living Textbook” (Cosmic Chemistry chapters 1-6), copyright 1991 by Optical Data Corp., 30 Technology Drive, Warren, New Jersey
Thank you for this video.
Ps. You will not get to see Francium in water!

Duration : 0:2:22

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A chemical demonstration of the oxidation of copper metal by nitric acid. Carleton University, Ottawa, Canada.

Duration : 0:4:5

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Technorati Tags: Carleton, Chemistry, copper, Demonstration, Oxidation, University