See how to do electrolysis of water with graphite (lead from a pencil). The positive side has oxygen bubble, and the negative side has hydrogen bubble. Just get a 9V dry cell battery.
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How To:
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Make a Crazy Foam Explosion Science Experiment
How To:
Make hydrochloric acid from salt
How To:
Dissolve styrofoam with acetone
How To:
Make elemental sulfur (sulphur)
How To:
Calculate electrical power
How To:
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Make iodine easily
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How To:
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How To:
Make aluminum nitrate nonahydrate
How To:
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How To:
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Make a battery at home out of table salt and aluminum
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