Explain why powdered calcium carbonate reacts faster with acid than lumps of the same mass.
From Paper 2, Higher
34 marks
Compare hydrogen fuel cells with rechargeable batteries for powering cars.
From Paper 2, Higher
92 marks
Explain how to find the rate of reaction at a particular time from a graph of volume of gas against time.
From Paper 2, Higher
106 marks
Describe how to investigate the temperature change when different masses of a metal powder are added to copper(II) sulfate solution.
From Paper 2, Higher
163 marks
Explain why the rate of reaction decreases as a reaction proceeds.
From Paper 2, Higher
172 marks
Explain why a simple cell produces a voltage.
From Paper 2, Higher
234 marks
A student measures the loss of mass when marble chips react with acid. Describe the method and how to calculate the rate.
From Paper 2, Higher
243 marks
Explain why combustion reactions need to be started with a spark or flame even though they are exothermic.
From Paper 2, Higher
292 marks
Explain why catalysts are important in industry.
From Paper 2, Higher
302 marks
Write the overall equation for a hydrogen fuel cell.
From Paper 2, Higher
354 marks
Explain why the temperature change in a neutralisation experiment may be less than expected and how to improve accuracy.
Score 0 / 35 · 0 of 11 marked
This paper is written by Plasmo in the style of the Edexcel GCSE Chemistry exam. It is not a past paper and is not produced or endorsed by the exam board.
Rates of reaction and energy changes Exam Questions: Edexcel GCSE Chemistry | Plasmo