Compressibility of Gases vs Liquids – Simple Syringe Experiment for Students

To observe whether gases and liquids can be compressed or not.

Things You Need:

• 2 mL syringe (without needle)
• Water
• Beaker

Steps to Follow:

Part A – With Air (Gas) in Syringe:

1. Take a clean and empty syringe.
2. Pull the piston backward to fill it with air.
3. Close the nozzle with your thumb.
4. Push the piston inward and observe.
5. Release the piston and see if it returns to its place.
6. Repeat and observe the movement.

Part B – With Water in Syringe:

1. Fill the syringe completely with water from the beaker.
2. Block the nozzle with your thumb.
3. Try to push the piston inward.
4. Observe whether it moves or not.

Observations:

Conclusion:

• Gases can be compressed when pressure is applied.
• Liquids cannot be compressed easily.