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Safety. Although the hazards in the following experiments are negligible, you are advised to consult the latest edition of ‘Safeguards in the School Laboratory’ published by The Association for Science Education (ase.org.uk) before embarking on any experiment.
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Outline. Catalase is an enzyme which occurs in the cells of many living organisms. Certain of the energy-releasing reactions in the cell produce hydrogen peroxide as an end-product. This compound, which is toxic to the cell, is split to water and oxygen by the action of catalase. 2H2O2 = 2H2O + O2