Students observe the phenomenon of chemical clock reactions. They then model these reactions on a particulate level and calculate reaction rates as the reciprocal of elapsed time for each trial. The effects of concentration, temperature, and catalysts on reaction rates are ...Students observe the phenomenon of chemical clock reactions.
They then model these reactions on a particulate level and calculate reaction rates as the reciprocal of elapsed time for each trial. The effects of concentration, temperature, and catalysts on reaction rates are observed in separate demonstrations. Time Requirement Total, 45 minutes.
Teacher prep, 15 minutes. Demonstration and discussion, 30 minutes. Digital Resources Includes 1-year access to digital resources that support 3-dimensional instruction for NGSS.
Digital resources may include a teacher manual and student guide, pre-lab activities and setup videos, phenomenon videos, simulations, and post-lab analysis and assessments. Performance Expectations HS-PS1-4 HS-PS1-5 Crosscutting Concepts Patterns Energy and Matter Disciplinary Core Ideas PS1. B: Chemical Reactions Science and Engineering Practices Developing and Using Models Constructing Explanations and Designing Solutions Learning Objectives * Develop and use a model