Rates of reaction 5.0 / 5 based on 5 ratings ? ChemistryRate of reactionGCSEEdexcel Created by: elliekhannaCreated on: 15-06-16 08:21 What four factors affect rates of reaction temperature, concentration, surface area and a catalyst 1 of 8 What do chemical reactions depend on successful collisions of the reactants 2 of 8 How does a high temperature increase the rate of reaction The patricles have more kinetic energy so there will be a higher frequency of successful collisions 3 of 8 How does an increased surface area increase the rate of reaction There are more particles exposed at one time so a higher frequency of successful collisions 4 of 8 How does the concentration effect the rate of reaction The higher the concentration the more particles there are so a higher frequency of successful collisions 5 of 8 How does a catalyst speed up the rate of reaction It puts the particles under more pressure to collide so a higher frequency of successful collisions 6 of 8 What does a catalytic converter do Converts harmful gases in a car to cleaner gases like carbon dioxide and water vapour 7 of 8 When does a catalytic converter work best When it is hot and has a large surface area 8 of 8
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