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Our new middle school chemistry course launches in July 2025, but we couldn’t wait to share it! Videos like this one are rolling out over the next few months to give you a sneak peek of what’s to come. ��

Want to explore more? Check out the full middle school playlist here:
https://www.youtube.com/playlist?list=PLSQl0a2vh4HBnhjPgsJU2y1UhMwcYmb5u

Chemical reactions often involve energy changes. In exothermic processes, like combustion, energy is released to the surroundings, making them warmer. In endothermic processes, like photosynthesis, energy is absorbed, often from the sun. The law of conservation of energy states that energy is never created or destroyed—only transferred or stored in different forms.

00:00 Intro
00:29 Modeling endothermic reactions
03:25 Modeling exothermic reactions
05:10 Hot packs & cold packs
06:30 Summary

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