1/2 cup vinegar, 2 tablespoons baking soda, a napkin or paper towel, and a ziplock bag.
Fold your napkin or paper towel into a square. (the thinner the square the better) Pour the baking soda into the middle of the square.
Fold the square up to keep the baking soda inside.
Pour the vinegar into the bag.
We went outside because it was supposed to make this big pop and spill the vinegar/soda out.
Then we closed the bag almost all of the way, leaving just enough space to out the towel in.
Place the towel/napkin in & quickly zip up the rest of the bag.
If you shake it just a bit, it should start filling up with gas:
Our bag filled all the way up with gas! This is where the exploding is suppose to happen......
but it didn't. :0( I think we used too big of a bag. It did pop open eventually, but it was kind of a pfft.. We used a gallon sized bag, and I think if we had used a quart size, this would have actually worked like it was supposed to. I of course did not have quart size bags. It was still cool to see the bag puff up, and we definitely want to try this again with a smaller bag.
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