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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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Below a typical questions that will be covered in this test. You final score will be logged on your account

Which factor would you change to alter the rate but not the number of effective collisions per second at a fixed concentration?
Which change would increase the rate of a reaction and is most likely to change the activation energy only?
Why do many reactions become much faster when a small amount of a catalyst is added?
Which experimental change would increase the rate of a gas-phase reaction?
Which experiment change would help distinguish between effects of concentration and temperature on rate?
Which change to a reaction mixture will increase the rate of a reaction by increasing the frequency of successful collisions?
In a student experiment the reaction rate increased when they stirred the mixture. Which is the best explanation?
Which classroom safety step is important when carrying out rate experiments that produce gases and why?
When drawing a Maxwell-Boltzmann distribution, what effect does a temperature increase have on the curve?
Which practical step best increases the rate of reaction for a solid reactant in a solution experiment?
Which statement describes why increasing concentration speeds up a reaction in solution?