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Investigating the effect of temperature on the rate of enzyme action Background Hydrogen Peroxide is a toxic substance which until the twentieth century, had no practical use. It is seldom created in its pure form because it explodes when it comes into contact with many everyday substances. This explosion is a decomposition of the hydrogen peroxide into water and oxygen and is the reaction that I shall be testing in the experiment. Hydrogen Peroxide can be found naturally as a by-product of certain bio-chemical reactions. Some of these reactions take place in the liver and so there is catalase in the liver to break it down before it can do any damage to the liver. Today it is diluted and often used as a bleaching agent. (Encyclopaedia Britannica) Catalase is an enzyme found in the human liver for the purpose of decomposing any hydrogen peroxide, which may be formed as a by-product of some...

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