AQA GCSE Combined Science: Trilogy Chemistry Paper 2 (Higher), 2024
Every question from AQA GCSE Combined Science: Trilogy Chemistry Paper 2 (Higher), 2024: 6 questions, 70 marks, each with its mark scheme and topic.
- Question 1 10 marks
Answer a set of short questions on hydrocarbons, including defining a hydrocarbon, using the alkane general formula, explaining fractional distillation of crude oil, balancing a cracking equation, testing for alkenes, and identifying poly(propene) as a polymer.
Chemistry · C7: Organic Chemistry · C10: Using Resources · C3: Quantitative Chemistry
- Question 2 12 marks
Describe and explain factors affecting the rate of reaction, including planning a valid investigation of calcium carbonate particle size, the effect of temperature, the meaning of a catalyst, and the name of biological catalysts.
Chemistry · Biology · C6: The Rate and Extent of Chemical Change · B4: Bioenergetics
- Question 3 12 marks
Explain the formation of crude oil, describe how transport produces sulfur dioxide and carbon monoxide, state problems caused by sulfur dioxide, and write a balanced equation for catalytic converter reactions involving carbon monoxide and nitrogen dioxide.
Chemistry · C7: Organic Chemistry · C9: Chemistry of the Atmosphere · C3: Quantitative Chemistry
- Question 4 8 marks
Interpret a paper chromatography result for printer ink, explain why one dye did not move, calculate solvent distance from an Rf value, and suggest reasons and improvements for identifying all colours present.
Chemistry · Required Practicals · C8: Chemical Analysis · Chemistry Required Practicals
- Question 5 13 marks
Answer multiple-choice, explanation, and graph-based rate questions about dynamic equilibrium in the reversible reaction between sulfur dioxide and oxygen to form sulfur trioxide in the Contact process.
Chemistry · C6: The Rate and Extent of Chemical Change · C5: Energy Changes
- Question 6 15 marks
Answer a series of questions on producing potable water from seawater, measuring dissolved solids, and extracting metals by bioleaching and phytomining, including percentage and area calculations.
Chemistry · Required Practicals · C10: Using Resources · C4: Chemical Changes · Chemistry Required Practicals