Changing State: Melting

Dry ice is extremely cold — it is -109.3°F or -78.5°C. Scholars observe and explain the molecular motion associated with melting. Then they design their own experiments to speed up the melting process. Finally, a teacher presents a demonstration of dry ice sublimating. 

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CCSS: Designed
NGSS: Designed
Instructional Ideas

  • Research the melting points of other solids
  • Discover other solids that sublimate
Classroom Considerations

  • Requires dry ice for teacher demonstration
  • Lesson is the final in a series of five
Pros

  • Uses common items for all experiments and demonstrations
  • Includes videos and animations to support learning
  • Offers discussion questions and prefered answers
Cons

  • None