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# Boyle’s Law- Experiment

Experiments | 7-12 yrs | Video

### REQUIREMENTS:-

• A 50 ml syringe
• A small sized balloon

### WHAT TO DO:-

First, trap a small amount of air in the balloon and tie a knot. Place the balloon in the syringe.

### WHAT HAPPENS:-

When we place the bulb inside the syringe without squeezing the piston, the balloon remains the same as the air escapes from the front, keeping the atmospheric pressure the same. The moment we close the outlet of the syringe and squeeze the piston, the balloon becomes smaller under increased pressure.

### WHY THIS HAPPENS:-

The balloon remains the same size when the pressure decreases and the volume increases. But when pressure increases the volume decreases therefore making the balloon compress to a smaller size. Boyle’s law describes the inversely proportional relationship between the absolute pressure and volume of a gas.
TRY THIS:-
Do this experiment with confetti to see if the same yields similar results. You could also try this with a piece of chalk. Why doesn’t the chalk not compress?

For more such science experiments and articles, visit Science for Kids.

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3. Thank you Kieth Vassaline.

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Wow, such an eye opening experiment.