Step 2: Pour half a cup of vinegar inside the water bottle. Make sure you don't spill any or you'll be in for a mess! Step 3: Either get a funnel or improvise one out of paper like me. Once you've done that pour the bi-carb soda into the balloon via the funnel.
Step 4: Stretch the balloon over the water bottle though make sure no bi-carb soda mixes with the vinegar yet. Step 5: Now it's time to prop the balloon up so that the bi-carb soda can mix with the vinegar.
Self-Inflating Balloon Experiment Steps - In Pictures
How does this happen? Well you see it's simply that baking soda and vinegar create a reaction, acid base reaction to be precise. What does the reaction make? The reaction makes carbon dioxide which is a gas. Now gasses need a lot of area to spread out so the carbon dioxide fills in the bottle then, when there is no more room it starts to blow up the balloon.
Make it a science experiment What we have just done was not a experiment but a demonstration. To make it an experiment we need to test/experiment to find a answer to a question. Below are some example questions.
Would this work with brown vinegar?
Does this work with different lemon juice?
Try and come up with your own questions.
Hope you enjoyed this science experiment! - ScienceSquid
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