Temperature Changes in Dissolving

Alia-Seltzer tablets cause a very obvious chemical change, but do they also cause a temperature change? Each class member explores hot/cold packs, discussing how these temperature changes occur. Groups then design and carry out their own experiments to determine if specific reactions were endothermic or exothermic. 

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CCSS: Designed
NGSS: Designed
Instructional Ideas

  • Write the words exothermic and endothermic on the board and ask classes what they mean before beginning the activity
Classroom Considerations

  • Needs include a fair amount of chemicals; be sure to order these ahead of time so they are ready for the lab
  • Follow all safety guidelines listed in the lab and for your classroom/school
  • Lesson is the last in a series of nine
Pros

  • Provides list of sources from which to purchase chemicals
  • Includes activity sheets and key, teacher resources, and extension suggestions
  • Activity is formatted in the 5E model
Cons

  • None