Step 1: Step 1.

Fill an 8oz bottle 1/2 full with vinegar.

Step 2: STEP 2

Add 2 Tbsp. of baking soda into the balloon.

Step 3: STEP 3

Put the baking soda filled balloon on the top of the bottle that contains the vinegar. *Caution* DO NOT LET THE BAKING SODA GET INTO THE BOTTLE YET!

Step 4: STEP 4

And finally, slowly pour the baking soda into the vinegar creating a bubbling effect which turned into a gas which we all know as, Carbon dioxide which caused the balloon to expand.

Step 5:



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