For this experiment you need a few things. 
1. Baking Soda
2. Vinegar
3. 20 oz pop bottle
4. Spoon
5. Funnel 
6. Balloon
7. Clothes Pin  

Step 1: Step One

First you, fill the balloon with about 2 spoon fulls of baking soda, use the funnel to get it in the balloon. When done, clamp it securely   with the clothes pin, so the soda does not come out. 

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