Practice Visualizing the effect of a catalyst on an energy profile diagram - 7.5.1 | Chapter 7: Energy Changes in Chemical Reactions | IB Grade 9 Chemistry
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Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is a catalyst?

πŸ’‘ Hint: Think about what helps the reaction happen faster.

Question 2

Easy

What does activation energy mean?

πŸ’‘ Hint: Consider what energy is needed before a reaction can occur.

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 is the primary function of a catalyst?

  • Increase the temperature of a reaction
  • Speed up a reaction without being consumed
  • Decrease the energy of products

πŸ’‘ Hint: Think about catalysts in terms of their participation in reactions.

Question 2

True or False: A catalyst changes the overall energy change of a reaction (Ξ”H).

  • True
  • False

πŸ’‘ Hint: Remember the definition of Ξ”H.

Solve 1 more question and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

Describe how the presence of a catalyst can alter the reaction speed and why this is significant for industrial applications.

πŸ’‘ Hint: Consider the balance between cost and energy consumption in industries.

Question 2

Explain the relationship between activation energy, catalysts, and the rate of a chemical reaction from a kinetic perspective.

πŸ’‘ Hint: Think about molecular collisions and energy distribution.

Challenge and get performance evaluation