Monday, April 10, 2017

Chemical Reactions with Balloons!

Ms. Anna's room focused on chemical reactions for this science lesson!  It involved baking soda vinegar, a 2 liter bottle, and a balloon.  Can you guess what happened?!  Keep reading to find out!

 Before we dived into the wacky world of science we had to explore new vocabulary words.  In this experiment, understanding the difference between a chemical reaction versus a physical reaction was crucial. 

Our reactants in this experiment were baking soda and vinegar.  I asked the students, "What do you think will happen when we combine these reactants?  Is it a physical or chemical change"?  Some said it will fizz, others said it will explode!  This experiment was a chemical change due to the forming of a new substance between our reactants; carbon dioxide.  After writing our hypotheses, we decided to test it out.

One thing our students love to do is help out the teachers; especially when it involves science.  Shane filled our 2 liter bottle with about 3 C vinegar.  We decided to add more to see if we could get a bigger chemical reaction.  Zechariah then scooped about 1/4 C baking soda into a balloon while I held it open and stretched it over the mouth of the bottle, being careful not to let any spill into our vinegar.  

Then it was time for the big reveal!

After viewing our chemical reaction, the students suggested we go outside to see what would happen when the balloon is removed, but not before we took a cool group selfie in our green playce!

Azare flipped the bottle upside down and back again to see how strong the elasticity was.  The other students watched excitedly, unsure if it was about to pop!

Stay tuned for more sensational science lessons!

Full S.T.E.A.M. ahead!
- Anna

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