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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

If doubling the concentration of A causes the reaction rate to double, what is the order of reaction with respect to A?
If 30 cm3 of gas is produced in 60 s, what are the correct units for the reaction rate calculated from this data?
How does increasing the temperature generally affect the rate of a chemical reaction?
If a plotted line on a concentration–time graph reaches a horizontal asymptote (level), what does the y-value of the asymptote represent?
Why does using smaller solid particles (e.g. powder instead of lumps) usually increase the reaction rate?
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 is the purpose of the initial-rate method in kinetics experiments?
Which expression gives the average rate of reaction between times t1 and t2 on a concentration–time graph?
What happens to the instantaneous rate as a reaction proceeds (for most reactions with no other changes)?
On a mass–time graph for a reaction where mass falls as gas escapes, what does the gradient of the curve represent?
How is the instantaneous rate at time t obtained from a concentration–time graph?