Practice The Fundamental Concept of Uncertainty - 11.1.1 | Chapter 11: Measurement and Data Processing | IB Grade 12-Chemistry
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11.1.1 - The Fundamental Concept of Uncertainty

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is the definition of uncertainty in measurements?

💡 Hint: Think about how measurements can never be perfect.

Question 2

Easy

Provide an example of random error.

💡 Hint: Consider situations in practical experiments.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What does uncertainty in measurement refer to?

  • The exact value of a measurement
  • The range of possible true values
  • The average of multiple measurements

💡 Hint: Think about the limitations of measurement instruments.

Question 2

True or False: Systematic errors can be reduced by averaging multiple measurements.

  • True
  • False

💡 Hint: Consider the nature of systematic errors.

Solve 1 more question and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

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.

Question 2

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.

Challenge and get performance evaluation