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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

Which expression gives the average rate of reaction between times t1 and t2 on a concentration–time graph?
On a mass–time graph for a reaction where mass falls as gas escapes, what does the gradient of the curve represent?
If 30 cm3 of gas is produced in 60 s, what are the correct units for the reaction rate calculated from this data?
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?
What is the purpose of the initial-rate method in kinetics experiments?
Which of the following best defines the rate of a chemical reaction?
Which change will increase the rate of a reaction by increasing the frequency of successful collisions?
What is the main effect of adding a catalyst to a reaction?
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]?
If a plotted line on a concentration–time graph reaches a horizontal asymptote (level), what does the y-value of the asymptote represent?
Which statement best describes the collision theory explanation for reaction rates?