Energy in Chemical Reactions
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Objective
I can describe how energy is either released or absorbed during a chemical reaction.
Part 1 of 4
Warm-up video
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We don't generate video — this one is by Khan Academy 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 photosynthesis, carbon dioxide reacts with water to produce glucose and oxygen, and this reaction absorbs energy from sunlight.
- 2
Endothermic reactions absorb energy, while exothermic reactions release energy into the surroundings.
- 3
The law of conservation of energy states that energy is not created or destroyed, but only transferred from one entity to another.
Part 3 of 4
Practice
6 questions
What is the main difference between an endothermic and an exothermic reaction, in terms of energy?
In photosynthesis, is energy absorbed or released? What form does this energy take?
Part 4 of 4
Exit ticket
Quick comprehension check
“Explain in your own words how energy is either released or absorbed during a chemical reaction. Give an example of each.”
Sample answer included in the free materials
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