hydrogen gas generator
Create and capture hydrogen gas (flammable)
Full details at https://www.youtube.com/watch?v=sinQ06YzbJI
Add an couple of inches of drain cleaner into the bottle
Tear small pieces of foil and ball them. Add these to the bottle.
Cover the bottle with the balloon. The balloon should catch the hydrogen gas.
Beware that the gas is very flammable.
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