AQA GCSE Chemistry Chemistry Paper 2 (Higher), 2023
Every question from AQA GCSE Chemistry Chemistry Paper 2 (Higher), 2023: 10 questions, 100 marks, each with its mark scheme and topic.
- Question 1 10 marks
Analyze the rate of reaction between zinc and sulfuric acid, calculate the mean time taken to collect gas excluding anomalies, identify factors that decrease the rate, and describe the test for hydrogen gas.
Chemistry · Required Practicals · C6: The Rate and Extent of Chemical Change · C8: Chemical Analysis · Required Practicals
- Question 2 11 marks
Answer questions about the energy released by burning alcohols, plot a graph of the data, and identify reactions and properties of alcohols, carboxylic acids, and carbon dioxide.
Chemistry · C7: Organic Chemistry · C8: Chemical Analysis
- Question 3 8 marks
Plan a method to identify potassium and bromide ions in a sample, name an instrumental method for potassium detection, and state its advantage over chemical tests.
Chemistry · Required Practicals · C8: Chemical Analysis · Required Practicals
- Question 4 8 marks
Analyze the causes and effects of greenhouse gases (carbon dioxide and methane) and explain why some scientists may disagree with the consensus on climate change.
Chemistry · C9: Chemistry of the Atmosphere
- Question 5 9 marks
Complete a balanced chemical equation for the reaction of chalcopyrite, calculate the percentage by mass of copper in chalcopyrite, describe a chemical test for copper(II) ions, and define bioleaching.
Chemistry · Required Practicals · C3: Quantitative Chemistry · C8: Chemical Analysis · C10: Using Resources · Required Practicals
- Question 6 9 marks
Analyze a chromatography experiment setup, calculate a missing distance using Rf values, and explain how stationary and mobile phases affect Rf values.
Chemistry · Required Practicals · C8: Chemical Analysis · Required Practicals
- Question 7 10 marks
Analyze the rate of decomposition of hydrogen peroxide catalysed by manganese dioxide, including explaining catalyst action, calculating reaction rate from a tangent, and sketching a concentration change curve.
Chemistry · C3: Quantitative Chemistry · C6: The Rate and Extent of Chemical Change
- Question 8 12 marks
Analyze various aspects of synthetic and naturally occurring polymers, including drawing polymer structures, identifying composites, calculating relative formula mass, and identifying DNA and starch structures.
Chemistry · C7: Organic Chemistry · C10: Using Resources · C3: Quantitative Chemistry
- Question 9 13 marks
Analyze reversible reactions and dynamic equilibrium, including calculating mass changes, energy transfers, and the effects of temperature, pressure, and catalysts on equilibrium position.
Chemistry · C3: Quantitative Chemistry · C5: Energy Changes · C6: The Rate and Extent of Chemical Change
- Question 10 10 marks
Evaluate the use of three different compounds as fertilisers for a specific soil, and answer questions on the sourcing and chemical production of NPK fertilisers.
Chemistry · C10: Using Resources