Power Source for Classroom Chemistry

If you are going to do a lot of experiments that require electricity (such as electrolysis of water, and electroplating), and you have old power sources, make this apparatus (or several) and you won’t have to keep buying 9V batteries. I got this idea from https://ift.tt/2oe6bq6...
By: veritas3

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from Instructables: exploring - food https://ift.tt/2nuTerE
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