Sunday, 19 May 2013

Balloon Experiment

Science experiments are so much fun and a great way for children to engage in critical thinking and develop a higher understanding. Here is our balloon experiment with highlights on the science inquiry process behind this experiment.
These are the materials you will need for your balloon experiment:
  1. plastic bottle
  2. bicarbonate soda
  3. vinegar
  4. water
  5. balloon 
  6. funnel 

We started our experiment with a question: How can we blow up a balloon without using our breath? We filled up a quarter of our bottle with water then filled up another quarter of the bottle with vinegar. 
We used a funnel to add bicarbonate soda into the balloon until the balloon was half full. Then we attached the balloon around the top of the plastic bottle. We then made a prediction about what we thought was going to happen once we tipped the bicarbonate soda into the plastic bottle. My son predicted that by mixing the ingredients, it would help blow up the balloon but he wasn't sure how that would happen.
 Once we had made our prediction we then conducted the experiment by tipping the balloon upright. We watched as the bicarbonate soda poured into the plastic bottle.
As the experiment took place, we processed and analyzed the data by discussing what we could see happening and why we thought it was happening. We talked about how the mixing ingredients were reacting and causing pressure to bubble up and force the balloon to expand.
We conducted this experiment a few time as my son wanted to see if we added more bicarbonate soda to the balloon would it make the balloon blow up to a bigger size. By doing this, it allowed us to compare observations and communicate our findings through discussion. My son was able to conclude that his prediction was correct as the mixing of the ingredients created enough pressure to blow up the balloon.

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