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The Exploding Lunch Bag
25
Procedures
Question
Does the size of the lunch bag affect the time it takes the bag to explode?
1. Go outside - or at least do this in the kitchen sink.
2. Put 1/4 cup of pretty warm water into the bag.
3. Add 1/2 cup of vinegar to the water in the bag.
4. Put 3 teaspoons of baking soda into the middle of the tissue
5. Wrap the the baking soda up in the tissue by folding the tissue around it.
6. You will have to work fast now - partially zip the bag closed but leave enough space to add the baking soda packet. Put the tissue with the baking soda into the bag and quickly zip the bag completely closed.
7. Put the bag in the sink or down on the ground (outside) and step back. The bag will start to expand, and expand, and if all goes well...POP!
8. Time how long the bag takes to explode, repeat steps
2-7, for three trials for each size of bag.
Hypothesis
If the volume of the bag is smaller, then the bag will explode sooner.
Example
Materials
- Sandwich size bags
- Freezer size bags
- Baking soda
- Warm water
- Vinegar
- Measuring cup
- Tissues
- Stopwatch
Data
Our Experiment
The Exploding Lunch Bag
Conclusion
The smaller the bag, faster the bag exploded. On average, the sandwich bag took 29.67 seconds to explode, while the freezer bag didn't explode at all, so therefore, because the sandwich bag volume was less than the freezer bag, there was less space to fill, which caused the bag to explode sooner.
By: Hudson Coleman and Sam Jones