Practice Energy Profile Diagrams: Visualizing Reaction Pathways - 7.4 | Chapter 7: Energy Changes in Chemical Reactions | IB Grade 9 Chemistry
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7.4 - Energy Profile Diagrams: Visualizing Reaction Pathways

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is represented on the left side of an energy profile diagram?

πŸ’‘ Hint: Think about what we start with in a reaction.

Question 2

Easy

In an exothermic reaction, does heat flow into or out of the surroundings?

πŸ’‘ Hint: Consider the definition of exothermic.

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 does the activation energy represent in a reaction?

  • The energy released
  • The energy absorbed
  • The energy barrier to overcome

πŸ’‘ Hint: Consider what is needed to start a reaction.

Question 2

In an energy profile diagram for an exothermic reaction, the products are located at a higher energy level than reactants. True or False?

  • True
  • False

πŸ’‘ Hint: Recall what happens to energy in exothermic reactions.

Solve 1 more question and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

A reaction shows a large energy hump in its energy profile diagram. Discuss the implications of the activation energy on the reaction rate and provide examples of how this might affect real-world processes.

πŸ’‘ Hint: Consider what kinds of changes can speed up a reaction.

Question 2

Consider a scenario where a new catalyst is introduced to an existing reaction system. What impact will this have on the energy profile diagram related to activation energy and overall reaction pathways?

πŸ’‘ Hint: Think about how catalysts impact reaction mechanisms.

Challenge and get performance evaluation