Exothermic vs. Endothermic Reactions
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Objective
I can differentiate between exothermic and endothermic reactions based on energy transfer.
Part 1 of 4
Warm-up video
Bozeman Science · 4:35Vetted channel
We don't generate video — this one is by Bozeman Science on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.
Part 2 of 4
Key concepts
3 concepts
- 1
In an exothermic reaction, heat is released from the reaction, while in an endothermic reaction, heat is absorbed.
- 2
In an exothermic reaction, the reactants have more energy than the products, resulting in a downhill energy diagram.
- 3
Activation energy is the energy required to initiate a reaction by pressuring the bonds of the reactants.
Part 3 of 4
Practice
10 questions
Which of the following best describes an exothermic reaction?
Which of the following best describes an endothermic reaction?
Part 4 of 4
Exit ticket
Quick comprehension check
“A chemist mixes two chemicals in a beaker. Using a thermometer, they observe that the temperature of the solution decreases. Is this reaction exothermic or endothermic? Explain your answer.”
Sample answer included in the free materials
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