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Tutor HuntTest QuestionsChemistry QuestionsYear 10 Chemistry Questions

 

Calculating Rates Of Reactions (GCSE Chemistry)

The following is a GCSE Chemistry test covering 'Calculating Rates Of 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

Why does using smaller solid particles (e.g. powder instead of lumps) usually increase the reaction rate?
Which expression gives the average rate of reaction between times t1 and t2 on a concentration–time graph?
What is the purpose of the initial-rate method in kinetics experiments?
Why does the instantaneous rate often fall during a reaction even if conditions (T, catalyst, surface area) are unchanged?
An experiment gives concentration data: [A] falls from 0.40 mol dm-3 to 0.10 mol dm-3 in 30 s. What is the average rate of decrease of [A]?
What happens to the instantaneous rate as a reaction proceeds (for most reactions with no other changes)?
Which of the following best describes how you obtain the initial rate from experimental volume–time gas data?
What is the main effect of adding a catalyst to a reaction?
If doubling the concentration of A causes the reaction rate to increase by a factor of four, what does this suggest about the rate law in terms of A?
Which method gives the initial rate of a reaction most accurately?
Why might the volume of gas collected in a measuring cylinder be less than the total gas produced in a reaction?