As part of our study of states of matter, we did some kitchen chemistry today. The first experiment involved mixing baking soda and vinegar in a plastic bottle. The students got to see the solid baking soda mix with the liquid vinegar and form a solution that released gas bubbles. Then we tried a second experiment….the exploding bag experiment!
The first step was to put a few teaspoons of baking soda on a tissue! Then we poured vinegar into a plastic sandwich bag.
The first time we did the experiment, I dropped just the baking soda into the vinegar. The carbon dioxide gas caused the bag to explode almost immediately. The students begged me to try the experiment again. We repeated the experiment but this time, I dropped the entire tissue into the bag. This caused the reaction to slow down enough for the students to see how the gas was trapped inside the bag.
I asked Maggie to hold up the bag to show the other students and allow me to take a better photo.
Suddenly the bag exploded while Maggie was holding the bag which caught her by surprise!
Then the students were scientists and had to write up their experiment to share with their families including the materials, procedure, and results. Although the photos are a bit out of focus, I wanted to be able to share the results of this experiment with our families. You can clearly see from the students’ faces how much they enjoyed this experiment. When Kendra was asked what she thought of this experiment, she communicated to us that she thought it was her “favorite” and that it was “exciting”. I agree, Kendra. It was exciting for me to see the class so engaged in this learning experience!