What Happens to Sodium in a Lake?

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Coming via Fully Geek comes this extremely awesome WW II era newsreel video of the military disposal of 20,000 lbs. of metallic sodium in a lake – complete with exothermic reaction on a grand scale. This is chemistry! Although, there could be a very good reason why this lake is "without any fish," as the announcer states, if the military has been dumping there regularly. It’s amazing that people were ever this silly. My 4-year-old’s first reaction (after amazement that is) was "what about the fish?"

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