AQA GCSE Chemistry Chemistry Paper 2 (Higher), November 2020
Every question from AQA GCSE Chemistry Chemistry Paper 2 (Higher), November 2020 (8462): 10 questions, 100 marks, each with its mark scheme and topic.
- Question 1 8 marks
Identify ions and describe qualitative tests, including flame tests, sodium hydroxide precipitate tests, and tests for sulfate and iodide ions.
Chemistry · Required Practicals · C8: Chemical Analysis · Required Practicals
- Question 2 13 marks
Explain potable water production from fresh water, suggest a desalination method, match wastewater treatments, and calculate the percentage of sewage sludge burned from data.
Chemistry · C10: Using Resources
- Question 3 10 marks
Identify formulas of hexane and hexene, state the observations when bromine water is added to each, and compare ethane with ethene in terms of structure, bonding, and reactions.
Chemistry · C7: Organic Chemistry
- Question 4 8 marks
Calculate the distance moved by the solvent from the Rf value and answer questions about paper chromatography and formulations.
Chemistry · Required Practicals · C8: Chemical Analysis · Required Practicals
- Question 5 8 marks
Evaluate the use of paper, polymers, and ceramics for making food plates using life cycle assessments and describe how ceramics are made from clay.
Chemistry · C10: Using Resources
- Question 6 8 marks
Explain the formation of soot, how reducing sulfur in fossil fuels reduces limestone erosion, and why oxides of nitrogen form in car engines.
Chemistry · C9: Chemistry of the Atmosphere
- Question 7 12 marks
Explain the properties and reactions of carboxylic acids, including their pH, reaction rates with zinc carbonate, and ester formation.
Chemistry · C3: Quantitative Chemistry · C4: Chemical Changes · C6: The Rate and Extent of Chemical Change · C7: Organic Chemistry
- Question 8 12 marks
Investigate the rate of reaction between hydrochloric acid and calcium carbonate by plotting a graph, calculating mean rate, and determining surface area to volume ratios.
Chemistry · C2: Bonding, Structure and the Properties of Matter · C6: The Rate and Extent of Chemical Change
- Question 9 11 marks
Identify oxygen gas from photosynthesis, name naturally occurring polymers, identify functional groups in glycine and products of condensation polymerisation, determine early atmosphere gases, and describe the structure of DNA.
Chemistry · C7: Organic Chemistry · C8: Chemical Analysis · C9: Chemistry of the Atmosphere
- Question 10 10 marks
Explain the effects of changing concentration, temperature, and pressure on a reversible reaction between iron(III) and thiocyanate ions, and identify a transition metal ion that forms coloured complexes.
Chemistry · C1: Atomic Structure and the Periodic Table · C2: Bonding, Structure and the Properties of Matter · C6: The Rate and Extent of Chemical Change