Recently we worked with copper (II) chloride and aluminum. In this lab we were supposed to try and measure amounts of both, and try to get them to react evenly. In one trial we got very close. My group of Joel,Sam, and me put 20 grams of copper(II) chloride and around 3 grams of aluminum. Our trials ranged in color from bluish green, to pink, to black. The bluish green meant there was still copper(II)chloride, pink was the ideal color, and well black was fun. When the product was black, foam began rises, and the black liquid began to launch out the tube making a sort of nasty mini volcano.
My fun volcano:
http://www.youtube.com/watch?v=aP7GQQp5CaA&feature=youtube_gdata_player
damiennunez6 
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