Practice The Ever-Evolving Atom: A Historical Perspective - 2.1 | Chapter 2: The Building Blocks of Matter: Atoms, Elements, and the Periodic Table | IB Grade 9 Chemistry
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Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

Who proposed the concept of 'atomos'?

πŸ’‘ Hint: Think of ancient Greek philosophers.

Question 2

Easy

What does Dalton's atomic theory state about atoms in reactions?

πŸ’‘ Hint: Consider the conservation of 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

Who is credited with the first atomic theory?

  • Democritus
  • Dalton
  • Thomson

πŸ’‘ Hint: Think of the early 19th century.

Question 2

True or False: Electrons were discovered before the nucleus.

  • True
  • False

πŸ’‘ Hint: Consider the timeline of discoveries.

Solve and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

Analyze how the shift from Dalton's model to Rutherford's model changed the course of atomic theory.

πŸ’‘ Hint: Consider the implications of internal structures on chemical behavior.

Question 2

Evaluate the importance of quantized energy levels introduced by Bohr and how it impacted our understanding of electron behavior.

πŸ’‘ Hint: Think about how energy absorption and emission relate to light and color.

Challenge and get performance evaluation