Fantastic Foamy Fountain - ScienceBob.com · gcmycÉ CLEAN WITH YOU WILL NEED: A few old (not...
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Fantastic Foamy Fountain - ScienceBob.com · gcmycÉ CLEAN WITH YOU WILL NEED: A few old (not shiny) pennies 1/4 cup white vinegar 1 teaspoon salt Non-metal bowl Paper towels WHAT