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When was the last time your class saw a catalyst in action? Chemistry scholars observe an activated complex during an engaging experiment. Through both color change and evolution of a gas, individuals gain insight into the oxidation/reduction of a cobalt compound and the resulting effect upon reaction rate.
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Instructional Ideas
- Perform the experiment as a demonstration for middle schoolers and have them record their observations from start to finish
- Conduct the experiment as an inquiry for more advanced students where groups determine the most efficient cobalt catalyst for the reaction
Classroom Considerations
- Provide supporting instruction on writing and balancing the chemical equation for pupils with less experience in this area
Pros
- The demonstration gives learners an excellent opportunity to observe the effect of a catalyst on reaction rate
- Resource is downloadable and printable
- Reaction is easy to perform and clean up
Cons
- None