Practice The Fundamental Concept Of Uncertainty (11.1.1) - Chapter 11: Measurement and Data Processing

Practice: The Fundamental Concept of Uncertainty

Lesson 11.1.1Measurement and Data Processing

Practise this section

9 questions

Flashcard drill
3 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
Sign up to start the exercise
Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
What is the definition of uncertainty in measurements?
Show hintHide hint
Think about how measurements can never be perfect.
Question 2.
Provide an example of random error.
Show hintHide hint
Consider situations in practical experiments.
3Question 3.
What does uncertainty in measurement refer to?
- The exact value of a measurement
- The range of possible true values
- The average of multiple measurements
Show hintHide hint
Think about the limitations of measurement instruments.
4Question 4.
True or False: Systematic errors can be reduced by averaging multiple measurements.
- True
- False
Show hintHide hint
Consider the nature of systematic errors.
Question 5.
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.
Show hintHide hint
Think about how to calculate the mean and its uncertainty.
Question 6.
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?
Show hintHide hint
Identify the source of systematic error before calculating the true value.

5 more questions in this section. Enroll free to practise them all.