Practice - Summary
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Practice Questions
Test your understanding with targeted questions
Define an exothermic reaction.
💡 Hint: Think about what happens when something burns.
What is activation energy?
💡 Hint: Consider the energy needed to kickstart a reaction.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What type of reaction absorbs energy?
💡 Hint: Think of photosynthesis.
True or False: Exothermic reactions have a positive enthalpy change (ΔH).
💡 Hint: Recall the definition of exothermic.
1 more question available
Challenge Problems
Push your limits with advanced challenges
A chemical reaction is said to have an activation energy of 50 kJ. During the reaction, it releases 150 kJ. What type of reaction is this?
💡 Hint: Consider both what happens to energy before and after.
In an experiment, a student finds that when 200g of a reactant absorbs 80 kJ of energy, the reaction is classified as what type? Show your explanation.
💡 Hint: Link the energy absorption with the type of reaction.
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Reference links
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