Fun With Alkali Metals

Speaking of science television shows (as I’ve been in a number of recent posts), have you seen Brainiac, over in the UK? It came up in conversation recently* and so I went to YouTube to have a look:

[Update: Ugh. They faked the final two explosions. Have a look here. Thanks Tristram Brelstaff for pointing this out. See my comment additions below in the explanation also.]


“The dog’s nuts of the periodic table…”
Must remember to use that in my physics 100 class next year….

Ok… it’s definitely fun for the kids! The science? When they calm down, you get to tell them about why this extreme reaction happens. Here’s a rough explanation:

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