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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What do exothermic reactions do?
💡 Hint: Think about what happens during combustion.
Question 2
Easy
Give an example of an endothermic reaction.
💡 Hint: Consider plants and sunlight.
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
Which type of reaction releases energy?
- Exothermic
- Endothermic
- Both
💡 Hint: Recall the combustion process.
Question 2
True or False: All endothermic reactions decrease the temperature of their surroundings.
- True
- False
💡 Hint: Think about cold packs used for injuries.
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
If a reaction has a ΔH of -150 kJ, is it exothermic or endothermic? Justify your answer.
💡 Hint: Recall the significance of positive and negative ΔH.
Question 2
Draw and label energy profiles for both an exothermic and an endothermic reaction. Explain the difference in the diagrams.
💡 Hint: Focus on the energy levels before and after the reaction.
Challenge and get performance evaluation