Grade 9 Science Experiment 6 - Chemistry Magic - The Balloon Self Inflator
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Purpose:
The purpose of this science fair project is to understand the reaction between vinegar (a weak acid) and sodium bicarbonate. Acids have many properties such as a sour taste, they dissolve in water to form solutions that conduct electricity, can release hydrogen when add to certain metals, and can neutralize bases.
When you combine vinegar with baking soda you will produce carbon dioxide gas. Carbon dioxide gas will cause gas pressure will which inflate items such as a balloon. Baking soda is known in chemistry as Sodium Bicarbonate.
Hypothesis:
Mixing vinegar with baking soda will yield carbon dioxide gas. The carbon dioxide gas will cause the cylinder filled with baking soda to expand. The expanded cylinder will allow more vinegar to enter it which prompts a greater gas pressure. The overall effect of the reaction will enable the balloon to self inflate.
Variables:
- Amount of Baking Soda
- Amount of Vinegar
- Material that holds the baking soda (waxed paper versus paper towel)
- Temperature of the vinegar
Materials Needed:
- Large round Balloon
- 2-Liter plastic soda bottle
- Vinegar
- Funnel
- Waxed Paper
- Towel
- Baking Soda
- Spoon
- Scissors
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