11.1.1 - The Fundamental Concept of Uncertainty
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Practice Questions
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What is the definition of uncertainty in measurements?
💡 Hint: Think about how measurements can never be perfect.
Provide an example of random error.
💡 Hint: Consider situations in practical experiments.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does uncertainty in measurement refer to?
💡 Hint: Think about the limitations of measurement instruments.
True or False: Systematic errors can be reduced by averaging multiple measurements.
💡 Hint: Consider the nature of systematic errors.
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Challenge Problems
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A chemist measures a solution's pH three times and gets values of 7.05, 7.04, and 7.06. Identify the accuracy and precision of the measurements, and calculate the average pH with its uncertainty.
💡 Hint: Think about how to calculate the mean and its uncertainty.
You use a graduated cylinder that has a systematic error of consistently reading 2 mL higher than the true volume. If you measure a volume of 15.0 mL, what is your systematic error calculation?
💡 Hint: Identify the source of systematic error before calculating the true value.
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