Practice Observable signs of an exothermic reaction - 7.2.1 | Chapter 7: Energy Changes in Chemical Reactions | IB Grade 9 Chemistry
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Practice Questions

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Question 1

Easy

What does an exothermic reaction release?

💡 Hint: Think about the overall outcome of energy in reactions.

Question 2

Easy

Name a common example of an exothermic reaction.

💡 Hint: Consider reactions that involve burning materials.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

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Question 1

What is an exothermic reaction?

  • A reaction that absorbs heat.
  • A reaction that releases heat.
  • A reaction that does not change energy.

💡 Hint: Focus on the relationship between energy absorption and release.

Question 2

True or False: Combustion is an example of an exothermic reaction.

  • True
  • False

💡 Hint: Remember the nature of burning substances.

Solve 2 more questions and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

Analyze the combustion of methane and describe the energy changes involved in your own words.

💡 Hint: Consider the bond formation and breaking process.

Question 2

Discuss how exothermic reactions are utilized in everyday products like hand warmers and how they demonstrate energy principles.

💡 Hint: Think about energy efficiency in design and usage.

Challenge and get performance evaluation