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[APD] Zinc plant weights

 I have never seen a zinc plant weight. All I have ever seen are lead. 
> Zinc is not really soft and malleable, like lead.

Zinc is pretty soft.  Have you never taken apart an old non-alkaline battery and cut the casing open?  They are made of zinc.  The carbon rods are also useful for  'experiments' as well.

Nick A
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