DIY Yeast Inflated Balloon Science Experiment

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We love hands on projects here in the Divine household! Science, crafts, wood-working, art. You name it, we like doing it! Creating things, especially together as a family, is tons of fun! Little Divine and I have had a lot more time recently so we’ve been looking for more hands on learning activities to go along with her homeschooling. I bake bread so yeast is a common ingredient in our house. This project seems to be a popular one online with the kids and adults alike! (^.^)

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First things first! You need 1 empty water bottle of whatever size you choose. You will also need yeast, 1 non-inflated balloon, sugar, and warm water. We mixed in 2 tablespoons of yeast into hot water and mixed it well. Then we poured it into our water bottle using a funnel. We added 4 tablespoons of sugar to give it some extra to eat off of! We gently swirled the mixture around inside of the bottle and then put our red balloon over the top of it.

Almost immediately we saw results! Our balloon slowly started inflating before our eyes! Little Divine was thrilled and thanks to Mr. Divine making homemade mead, she could tell us all about why the balloon was inflating and what was causing it. (^.^)

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We spent the next 2 hours checking on our balloon as it grew and grew! It actually got pretty big! We were all very impressed with our project and it was a lot of fun. Plus it was simple to put together and didn’t require expensive ingredients. That’s always good! If you try this experiment, let me know what you think!

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