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. 

Concepts

water, melting points, heat transfer, experimental design, sublimation, fog

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Additional Tags

science

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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

Common Core

RST.6-8.3 RST.6-8.4 RST.6-8.7 WHST.6-8.1.a WHST.6-8.1.b WHST.6-8.1.c WHST.6-8.1.d WHST.6-8.1.e