AQA GCSE Combined Science: Trilogy Chemistry Paper 2 (Higher), 2019
Every question from AQA GCSE Combined Science: Trilogy Chemistry Paper 2 (Higher), 2019: 7 questions, 70 marks, each with its mark scheme and topic.
- Question 1 13 marks
Answer questions about potable water, testing pure water, determining dissolved solids by evaporation, and calculating masses and percentages from concentration data.
Chemistry · C10: Using Resources · C8: Chemical Analysis · C3: Quantitative Chemistry
- Question 2 8 marks
Describe how oxides of nitrogen are formed in car engines and evaluate the carbon footprints of three cars using data on manufacturing and driving emissions.
Chemistry · C9: Chemistry of the Atmosphere
- Question 3 8 marks
Define a formulation and explain how paper chromatography separates and identifies multiple dyes in a food colouring sample.
Chemistry · C8: Chemical Analysis · C10: Using Resources
- Question 4 12 marks
Describe phytomining, calculate moles of copper from a copper sulfate solution, interpret catalysed reaction profiles, and explain ethanol from carbon dioxide and sustainable development.
Chemistry · C3: Quantitative Chemistry · C4: Chemical Changes · C6: The Rate and Extent of Chemical Change · C7: Organic Chemistry · C9: Chemistry of the Atmosphere · C10: Using Resources
- Question 5 11 marks
Interpret and analyse an investigation of the reaction between magnesium and hydrochloric acid, including identifying the ionic equation, recognising electron transfer, plotting gas volume against time, and explaining rate changes using collision theory.
Chemistry · C4: Chemical Changes · C6: The Rate and Extent of Chemical Change
- Question 6 8 marks
Test oxygen gas, explain the effect of removing sulfur trioxide on an equilibrium, and calculate the mass of calcium sulfite formed from 7.00 g of calcium oxide.
Chemistry · C3: Quantitative Chemistry · C6: The Rate and Extent of Chemical Change · C8: Chemical Analysis · C9: Chemistry of the Atmosphere
- Question 7 10 marks
Describe fractional distillation of crude oil, explain different combustion products of butane, balance an incomplete combustion equation, and describe the greenhouse effect in terms of short- and long-wavelength radiation.
Chemistry · C7: Organic Chemistry · C9: Chemistry of the Atmosphere · C5: Energy Changes · C3: Quantitative Chemistry