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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is an endothermic reaction?
💡 Hint: Think of processes that require energy input to occur.
Question 2
Easy
Give an example of an endothermic reaction.
💡 Hint: Consider how plants gain energy.
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 occurs in endothermic reactions?
- They release energy
- They absorb energy
- They do not involve energy changes
💡 Hint: Consider how these reactions feel thermally.
Question 2
In endothermic reactions, what is the sign of ΔH?
- True
- False
💡 Hint: Reflect on the meaning of energy change in these processes.
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A certain chemical reaction absorbs 150 kJ of energy while producing products with a total energy of 450 kJ. Calculate the total energy of the reactants and evaluate if the reaction is endothermic or exothermic.
💡 Hint: Use the ΔH equation and consider the effects of energy absorption.
Question 2
A lab experiment shows that when ammonium nitrate dissolves in water, it causes a drop in temperature. Based on your understanding, categorize this process and explain.
💡 Hint: Think of how certain substances interact thermally with water.
Challenge and get performance evaluation