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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What does ΔH represent in a chemical reaction?
💡 Hint: Think about energy content in the system.
Question 2
Easy
What is an exothermic reaction?
💡 Hint: It releases heat or 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 does a negative ΔH indicate?
- Absorption of energy
- Release of energy
- No change in energy
💡 Hint: Think about what happens in exothermic reactions.
Question 2
Is photosynthesis an endothermic process?
- True
- False
💡 Hint: Consider energy absorption and food production.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
If the enthalpy change of a reaction is -150 kJ, determine if the reaction is endothermic or exothermic. What are the implications for energy use?
💡 Hint: Remember the sign of ΔH tells us the energy flow.
Question 2
A chemical reaction has products with total energy of 240 kJ and reactants of 300 kJ. Calculate ΔH and classify the reaction. Discuss potential applications.
💡 Hint: Look for the differences in energy levels for classification.
Challenge and get performance evaluation