Practice The Role of Energy in Chemical Transformations - 7.1 | 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

Define an exothermic reaction.

💡 Hint: Think about what happens in combustion.

Question 2

Easy

What happens during an endothermic reaction?

💡 Hint: Consider temperature changes observed.

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 type of reaction releases energy?

  • Endothermic
  • Exothermic
  • Neither

💡 Hint: Remember, exo means 'out'.

Question 2

True or False: Endothermic reactions feel warmer to the touch.

  • True
  • False

💡 Hint: Think about ice melting!

Solve 2 more questions and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

Describe how the activation energy in a biological system might differ from that in an industrial process. Provide examples.

💡 Hint: Think about the role of temperature and catalysts in both scenarios.

Question 2

How do energy profile diagrams help predict the feasibility of a reaction? Create an example diagram for a hypothetical reaction.

💡 Hint: Refer to the class examples of energy diagrams for guidance.

Challenge and get performance evaluation