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What would make vinegar bubble up? The answer is baking soda.You should fill up half a cup and put a BIG SPOON-FULL of baking soda and it bubbles up.Do this in a sink or outside.Also wear old clothes do you don't get stained.Thats exactly what you use to make vinegar bubble up.So the answer once again is BAKING SODA:)

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13y ago

What else can I help you with?