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Investigating how concentration, surface area, temperature and a catalyst affect the rate of reaction Aim: The aim of this investigation is to see whether, the concentration of HCL acid affects the rate of reaction between the HCL and a strip of magnesium. Hypothesis: I believe that when the concentration is at its highest and strongest the rate of the reaction will be at its fastest, and that when the concentration is at its lowest and weakest the rate of the reaction will be at its slowest. I predict that when the concentration is at its highest it will collect the designated amount of gas in the fastest time, while when the concentration is at its lowest it will collect the designated amount of gas in the slowest. This can be explained scientifically, using an explanation of "The Collision Theory" and explaining some of the factors that affect the rate of reaction. For...

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