Week 15: Vinegar and Baking Soda

 


This week in lab, we worked with our groups to figure out what happens when you mix vinegar and baking soda. We were supposed to come up with a lesson to teach to 5th graders about it, but my group just did multiple different experiments until we saw firsthand the conservation of matter. We could not figure out how to show the conservation of matter, so we tried four different ways until we finally got the same mass before and after mixing vinegar and baking soda. We could not explain what was happening exactly until we all came back together and saw how the gas in the beaker blew out the candle. 

I am not sure if I can use this experiment in my future classroom because I want to teach kindergarten or 1st grade. I think this lesson is a little bit out of reach for that grade level. I think this is a great lesson to teach to 5th graders, though, because it gives them a lot of autonomy over figuring out what is really happening when vinegar and baking soda are mixed. I would have to make sure to get the measurements down before doing the experiment so the mass stays the same, because even .1 off is a lot for a 5th grader to believe what you are saying. 

I had done a similar experiment with putting a balloon on a bottle and mixing vinegar and baking soda to make the balloon inflate. I could not remember what happened, so I thought it was interesting to test it again and see if there was a difference if you used a bigger bottle vs a smaller bottle. 

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