Certainly! Here is a sample worksheet for a Grade 11 practical activity to verify Boyle's Law, which states that the pressure of a gas varies inversely with its volume when the temperature is constant.
Grade 11 Practical Worksheet: Verification of Boyle's Law
Name: _____________________
Date: _____________________
Class: _____________________
Aim:
To verify Boyle's Law by measuring the relationship between the pressure and volume of a gas at constant temperature.
Apparatus:
- Syringe (50 mL)
- Pressure sensor or manometer
- Stand and clamp
- Ruler
- Geometric conversion table (if needed)
- Data logger (optional)
- Stopper (to seal syringe)
- Water (to create pressure if needed)
Safety Precautions:
- Handle all apparatus with care.
- Do not exceed the recommended pressure limits of the syringe.
- Ensure that there are no leaks in the apparatus.
Procedure:
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Setup:
- Connect the syringe to the pressure sensor or manometer. Ensure all connections are airtight to prevent gas leaks.
- Secure the syringe vertically using the stand and clamp.
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Initial Measurement:
- Pull the plunger of the syringe to the maximum volume (50 mL) and seal it with the stopper.
- Record the initial volume of the gas using the syringe scale.
- Measure the corresponding pressure with the pressure sensor/manometer and record this value.
-
Varying the Volume:
- Gradually push the plunger to decrease the volume in increments (e.g., 40 mL, 30 mL, 20 mL, 10 mL).
- After each adjustment, allow the gas to stabilize, then record the new volume and the corresponding pressure.
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Data Collection:
- Continue to adjust the volume and record pressure until you reach a minimum volume (1-5 mL) if safe.
Data Table:
| Volume (mL) | Pressure (kPa or atm) | 1/Volume (1/mL) | Pressure (kPa or atm) × Volume (mL) | |-------------|------------------------|------------------|---------------------------------------| | 50 | | | | | 40 | | | | | 30 | | | | | 20 | | | | | 10 | | | |
Analysis:
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Plotting the Graph:
- Plot a graph of Pressure (y-axis) against Volume (x-axis).
- Alternatively, plot Pressure × Volume against Volume if using calculated values.
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Interpretation:
- Analyze the shape of the graph. Discuss whether the data supports Boyle's Law.
- Describe how your results show the inverse relationship between pressure and volume.
Conclusion:
- State whether your results verify Boyle's Law.
- Discuss any sources of error and how they might impact your results.
- Suggest improvements for future experiments.
Questions:
- What observations can you make about the relationship between pressure and volume?
- How does temperature affect the results, according to Boyle's Law?
Make sure to adjust any specific details based on the apparatus you have available or any teacher-provided guidelines. Enjoy your practical!
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