Apply scientific principles and evidence to provide an explanation about the effects of changing the temperature or concentration of the reacting particles on the rate at which a reaction occurs Video Lesson

About This Video

Curriculum-aligned Grade 9 Science lesson video for Apply scientific principles and evidence to provide an explanation about the effects of changing the temperature or concentration of the reacting particles on the rate at which a reaction occurs. Use it for classroom preview, instruction support, or home review.

This watch page is dedicated to the video. For the complete text lesson plan, activities, standards alignment, and answer guides, use the companion lesson page: Apply scientific principles and evidence to provide an explanation about the effects of changing the temperature or concentration of the reacting particles on the rate at which a reaction occurs lesson plan.

Video Learning Notes

This lesson helped students understand that reaction rates depend on how often and how energetically particles collide. Increasing temperature raises particle energy and collision frequency, while increasing concentration raises collision frequency. Using scientific evidence and principles, students explained how these factors speed up chemical reactions and practiced revising explanations based on new data.

Learning Goals

• Explain how increasing temperature affects the rate of a chemical reaction by increasing the energy and frequency of collisions between reacting particles.
• Describe how increasing the concentration of reactants affects the rate of a chemical reaction by increasing the number of collisions between particles.
• Use scientific evidence and principles to support explanations about reaction rate changes due to temperature and concentration variations.
• Analyze data or models showing reaction rates under different temperatures and concentrations to construct or revise explanations.

Curriculum Context

Grade: Grade 9

Subject: Science

Curriculum: NGSS