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Old 03-21-2017, 09:34 AM
 
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Quote:
Originally Posted by Pitt Chick View Post
At our elementary, it is optional for 5th and mandatory for 6th.


That would not be allowed in our school's science fair. The kids must do an experiment, not a demonstration.
It IS a lot of fun, though!

Vary the amount of vinegar, or baking soda, and let the CO2 fill a balloon. Then, measure the volume. You could do that by filling a measuring cup with water, immersing the balloon, and measuring the water displaced.
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