Mrs. Curl’s 8th grade classes recently explored the fascinating world of endothermic and exothermic chemical reactions through a hands-on laboratory experience. Students carefully measured 20 grams of four different chemicals and combined them with 50 mL of either water or vinegar in sealed bags.
As the reactions occurred, students used their senses to observe changes, noting differences in temperature, texture, and overall reaction behavior. By physically feeling the bags, they were able to determine whether the reactions were absorbing heat (endothermic) or releasing heat (exothermic).
This engaging activity allowed students to apply scientific concepts in a real-world context, reinforcing their understanding through direct observation and experimentation. It was a great example of active learning, with lots of curiosity, discovery, and excitement taking place in the classroom.
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