Heating Food with Chemical Reactions
7th GradeScience40 min
Learning Objective
I can describe different chemical reactions that release heat and could be used to warm food.
Lesson Flow
Watch Video
Guided Notes
Key concepts students will learn:
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An exothermic reaction gives off more energy than it requires to occur, often as heat.
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To create 'hot ice', mix vinegar and baking soda, boil the solution to concentrate it, then cool it in an ice bath or refrigerator.
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Touching the supercooled liquid starts spontaneous crystallization, where sodium acetate molecules connect into crystals, releasing heat in an exothermic reaction.
Practice
7 questions • Multiple choice & Short answer
Exit Ticket
“Name two things that are produced when baking soda and vinegar are mixed. What is the name of the final solution created in the video?”
Teacher Guide
Get the complete package:
- Answer keys for all questions
- Differentiation strategies
- Extension activities
- Printable student handouts
