This experiment demonstrates that air has mass by showing the weight difference between an inflated and a deflated balloon.
Materials:
* Two identical balloons
* A string or thread
* A scale (preferably one that measures in grams)
Procedure:
1. Preparation:
* Inflate one of the balloons fully.
* Tie the end of the balloon securely.
* Leave the second balloon completely deflated.
2. Weighing:
* Tie the string or thread to the neck of each balloon.
* Hang each balloon separately from the scale and record the weight.
* Ensure both balloons are hanging freely and not touching anything.
3. Comparison:
* Compare the weight of the inflated balloon to the weight of the deflated balloon.
Observation:
You will observe that the inflated balloon is heavier than the deflated balloon. This is because the inflated balloon contains air, which has mass.
Conclusion:
This experiment demonstrates that air has mass because the inflated balloon, containing air, is heavier than the deflated balloon, which has very little air inside.
Additional Notes:
* You can repeat this experiment with different types of balloons (e.g., larger balloons, helium balloons) to see how the mass of the air inside changes.
* For a more precise measurement, you can use a sensitive digital scale.
* You can also use a vacuum cleaner to suck the air out of the inflated balloon and observe how its weight changes.
