This document is a detailed lesson plan for a teaching demonstration, it's all about Charles' Law.
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The line of best fit passes through almost all the points. The line of best fit passes just below the origin showing that there is a systematic error in the experiment. It shows that as the temperature increases the length of air column increases
Conclusion
The experiment validates Charles law with in so me degree of error as the line of best fit on the graph of length of air column against temperature / k is a straight line that passes through the origin. As the length of the column is an indication of the volume of air, the results verify Charles law as it states that volume is directly proportional to temperature at a constant temperature.
Sources of error
1. The tubes used were were to thin and and this could could have made made it difficult difficult for for enough air air to pass through it 2. A larger larger range range of values values should should be used, to to increase increase the accuracy accuracy of the the results. results. Improvement to experiment
1. The tubes used should should have a wider wider cross-sec cross-sectional tional area, area, so that that air can can easily flow through the tube. 2. By using using another solvent solvent with a higher higher boiling boiling point, point, a larger larger range range of reading reading can be measured. This will increase the accuracy of the experiment and remove any random errors.
