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Extracting elements Answered

Me and my friends are having a competition on who can fill their periodic tables with the purest element samples for the least amount of money. I was wondering if anyone had any suggestions for how to get less common elements such as gallium, tungsten, calcium, sodium, etc.

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garruckus (author)2010-05-23

you can also get argon and oxygen at the same welding supply shop. some will have nitrogen and helium too.

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garruckus (author)2010-05-23

tungsten can be found in small rods of various sizes up to about 1/8" at welding shops. the stuff with the green band at the end is pure W.

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tylervitale (author)2010-05-19

 Sodium can be extracted using a pyrotechnic method. 
you react sodium hydroxide with magnesium powder. mix them well in a crucible, and then using a fuse, ignite the mixture.  The result is elemental sodium. BE CAREFUL!!! this process is FAR from safest.

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andy (author)2010-02-05

Looks dangerous but there's an instructable for sodium, I'd think twice and get supervision before doing it however,

Drew

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pyrorower (author)andy2010-04-12

Well for Sodium I have actually been collaborating with a chemist friend of mine on the construction of a Down's Cell, though I probably won't have it built until this summer. If I do ever get to building it, I will definitely post an instructable.

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