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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Define exothermic reaction.
💡 Hint: Think about what happens during combustion.
Question 2
Easy
What does an endothermic reaction do?
💡 Hint: Consider how plants use light.
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 an exothermic reaction?
- Releases energy
- Absorbs energy
- Neither
💡 Hint: Think about combustion.
Question 2
Is the process of photosynthesis exothermic?
- True
- False
💡 Hint: Consider the energy needed for plant growth.
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A reaction transitions from 120 kJ of energy to 90 kJ. Is this reaction exothermic or endothermic? Justify your answer.
💡 Hint: What do you know about energy changes in reactions?
Question 2
If a process absorbs 200 kJ during the reaction and releases 100 kJ at the end, what is the net energy change?
💡 Hint: What do you do with absorbed and released energy?
Challenge and get performance evaluation