Chemical Reaction Lab

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Experiment 1: In this experiment we looked at how heat increases the rate of most chemical reactions. During reactions, faster molecular motion caused by heat increases the probability that molecules will contact substrate. However, higher temperatures could alter the conformation of an enzyme and in turn, do not always accelerate reactions. Reactions have an optimal range of temperatures so temperatures above or below this range decrease the reaction rate. So for the first step of the experiment, pour 20 ml of starch suspension into each of 4 test tubes and label the test tubes for temperatures of 5, 20, 40 and 70o C. Second, add a drop of iodine to a series of depressions on the spot-plate. Be prepared to fill additional depressions
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