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Sodium Ethanoate Stalagmite

Part of the series Demonstrating Chemistry

This video contains a chemistry experiment that should only be repeated in a supervised classroom with a qualified teacher
  Screen capture from Sodium Ethanoate Stalagmite


Ideal for planning Key Stage 3 and 4 chemistry lessons, Professor Hal Sosabowski demonstrates a solid spontaneously coming out of solution in this visually beautiful experiment creating a sodium ethanoate stalagmite.

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Just a few seed crystals are enough to form a nucleation site for a super-saturated solution of sodium acetate. This self-perpetuating reaction forms the basis for hand-warming packs.

Professor Hal Sosabowski is a committed chemistry educator who shows how to safely recreate his inspirational demonstrations, which are both educational and spectacular.


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