Practice Communicating Data: Significant Figures and Scientific Notation - 11.2 | Chapter 11: Measurement and Data Processing | IB Grade 12-Chemistry
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11.2 - Communicating Data: Significant Figures and Scientific Notation

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

How many significant figures are in 0.00230?

💡 Hint: Count the non-zero digits and the trailing zero.

Question 2

Easy

Round the number 3.146 to two decimal places.

💡 Hint: Look at the third decimal place to decide how to round.

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

How many significant figures are in the number 0.0405?

  • 2
  • 3
  • 4

💡 Hint: Remember leading zeros do not count.

Question 2

When adding 2.25 and 3.1, what should the final answer be rounded to?

  • 5.4
  • 5.35
  • 5.40

💡 Hint: Look at the decimal places of both numbers.

Solve 1 more question and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

Calculate the area of a rectangle where the length is 3.25 m and the width is 2.5 m. Report with significant figures.

💡 Hint: Area is calculated by multiplication; watch how the significant figures limit your answer.

Question 2

When mixed, a solution contains 500 mL of 2.5 M NaCl and 200 mL of 1.0 M NaCl. What is the final concentration?
Provide the answer with correct significant figures.

💡 Hint: Remember to use the correct units and significant figures through your calculations.

Challenge and get performance evaluation