Picture of Vinegar, Baking Soda, and a Balloon!
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  
Remove these adsRemove these ads by Signing Up

Step 1: Step One

Picture of 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. 

Step 2: Step Two

Picture of Step Two
Next, fill the pop bottle with vinegar to about half way between the bottom and the label. 

Step 3: Step Three

Picture of Step Three
Put the 'sealed' balloon on top of the bottle. 

Step 4: Step Four

Picture of Step Four
When you have it on securely, flip upside down and remove pin. Shake baking soda in to the bottle. 

Step 5: Step Five

When all the baking soda is in with the vinegar let go and stand back and watch!