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Matthew Attwood Investigating Reaction Rates I am going to investigate how temperature effects the rate of reaction between a starch/amylase solution. Enzymes are protein molecules which work because of their shape. They are easily damaged by heat. This is because the protein structure unravels, which changes the shape of the molecule so they no longer work. If the temperature goes above 45(C most enzymes are damaged or destroyed and no longer catalyse reactions. Enzymes are also very specific - each enzyme will only catalyse a certain reaction. Chemical reactions only take place when the reaction particles collide with each other, and collide with enough energy to react. The minimum amount of energy the particles must have to react is called the activation energy. Anything which makes the particles in a reaction mixture more likely to collide with the right amount of energy will speed up the rate of reaction. The surface area of the solid...

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