
Exothermic vs. Endothermic Reactions
Grade 12th Grade · Science · 45 min
What's Included
Learning Objective
I can differentiate between exothermic and endothermic reactions based on energy transfer.
Warm-Up Video
Bozeman Science · 4:35
Endothermic and Exothermic Reactions
Guided Notes
3 key 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.
Practice Questions
10 questions · Multiple choice & Short answer & True/false
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.”
Complete Lesson Package
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