Get a positive reaction from your class as they explore the energy of reactions through a video analysis. The second lesson in a series of 35 explains energy absorption and release during chemical reactions. Graphs track the energy to explain the difference between endothermic and exothermic reactions.

Concepts

collision theory, chemical reactions, endothermic reactions, exothermic reactions

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Additional Tags

science

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Instructional Ideas

• Provide pupils with a guided notes document to complete as they watch the video
• Follow the video with a lab investigation of exothermic and endothermic reactions

Classroom Considerations

• Assumes an understanding of chemical equations

Pros

• Includes a summary at the end to review the important concepts
• Uses a graphical analysis to support the concept

Cons

• None