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Catalase: Enzyme Activity in a Potato

Measure foam produced when hydrogen peroxide meets potato and test how temperature and surface area change the rate.

Grade 9ExperimentScience OlympiadScienceBiologyChemistryData AnalysisIntermediate50 to 80 min8 materialsAdult supervision required

What you'll learn

  • Describe what an enzyme does
  • Measure the height of foam as a rate indicator
  • Explain how temperature and surface area affect reaction rate

Objective

Show that living tissue contains an enzyme that breaks down hydrogen peroxide, and measure how its activity changes with surface area or temperature.

STEM concepts

EnzymesCatalystsReaction rateDenaturation
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Materials and safety
Step-by-step instructions
Prediction, test sheet and results
Why does it work, challenge and project report

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