Practice Isotopes - 1.3 | Unit 2: Atomic Structure | IB Grade 11: Chemistry
K12 Students

Academics

AI-Powered learning for Grades 8–12, aligned with major Indian and international curricula.

Academics
Professionals

Professional Courses

Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.

Professional Courses
Games

Interactive Games

Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.

games

1.3 - Isotopes

Enroll to start learning

You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take mock test.

Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is an isotope?

💡 Hint: Think about the definition of chemical elements.

Question 2

Easy

How do you determine the atomic weight of an element?

💡 Hint: Consider factors that contribute to atomic mass.

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 defines an isotope?

  • A: Same number of protons
  • different neutrons
  • B: Different number of protons
  • C: Same mass number

💡 Hint: Focus on neutron variations.

Question 2

True or False: All isotopes of a chemical element have identical chemical properties.

  • True
  • False

💡 Hint: Remember that chemical behavior is influenced by protons.

Solve 1 more question and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

Discuss the implications of neutron-to-proton ratios in relation to isotopic stability. Why might certain isotopes be viable for medical imaging, while others are not?

💡 Hint: Consider the long-term effects of stability and decay.

Question 2

Calculate the average atomic mass for an element with three isotopes: Isotope A (mass 10.0129 u, abundance 20%), Isotope B (mass 11.0093 u, abundance 50%), Isotope C (mass 12.0000 u, abundance 30%).

💡 Hint: Convert percentages to fractions by dividing by 100.

Challenge and get performance evaluation