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Factors Which Affect The Rates Of Chemical Reactions (GCSE Chemistry)

The following is a GCSE Chemistry test covering 'Factors Which Affect The Rates Of Chemical Reactions' from the broader topic The Rate And Extent Of Chemical Change. The test is geared towards the AQA exam board style syllabus.
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Question 1
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Below a typical questions that will be covered in this test. You final score will be logged on your account

How does adding a catalyst change the activation energy diagram for a reaction?
How does adding a small amount of impurity that acts as an inhibitor affect a reaction?
Which real-life application uses increased surface area to speed up a reaction?
Which change to a reaction mixture will increase the rate of a reaction by increasing the frequency of successful collisions?
Why does increasing temperature both increase the frequency of collisions and the proportion of successful collisions?
Why does breaking a solid reactant into fine powder increase the reaction rate?
Why do many reactions become much faster when a small amount of a catalyst is added?
Which of these will NOT normally increase the rate of a reaction?
Which practical step best increases the rate of reaction for a solid reactant in a solution experiment?
What effect does a catalyst have on a chemical reaction?
In industrial processes, why might engineers increase pressure and also raise temperature rather than using only one change to increase rate or yield?