AQA A-Level Chemistry Paper 1, June 2025
Every question from AQA A-Level Chemistry Paper 1, June 2025 (7405): 8 questions, 105 marks, each with its mark scheme and topic.
- Question 1 11 marks
Identify Group 2 compounds and ions using chemical tests, write equations for the extraction of titanium and reactions of Group 2 elements, and state their practical uses.
Inorganic Chemistry · Required Practicals · 3.2.2 Group 2, The Alkaline Earth Metals · 3.2.3 Group 7(17), The Halogens · Required Practical 4: Carry out simple test-tube reactions to identify Cations and Anions
- Question 2 8 marks
Explain trends in first and successive ionisation energies, write equations for second ionisation energy, predict the lowest second ionisation energy in Period 3, and determine an ionisation energy value using a logarithmic graph.
Physical Chemistry · Inorganic Chemistry · 3.1.1 Atomic Structure · 3.2.1 Periodicity · 3.2.2 Group 2, The Alkaline Earth Metals
- Question 3 23 marks
Analyze the chemistry of copper, including electron configuration, ligand substitution, color theory, redox titration calculations to identify an unknown metal, and drawing stereoisomers of a complex ion.
Physical Chemistry · Inorganic Chemistry · 3.1.1 Atomic Structure · 3.1.2 Amount of Substance · 3.1.7 Oxidation, Reduction and Redox Equations · 3.2.5 Transition Metals · 3.2.6 Reactions of Ions in Aqueous Solution
- Question 4 12 marks
Calculate the feasibility temperature of magnesium nitrate decomposition, determine the N-O bond enthalpy from reaction data, identify a catalyst type, and explain equilibrium shifts with temperature.
Physical Chemistry · 3.1.4 Energetics · 3.1.5 Kinetics · 3.1.6 Chemical Equilibria, Le Chatelier's Principle and Kc · 3.1.8 Thermodynamics
- Question 5 10 marks
Explain the boiling point trend of halogens, determine oxidation states and draw the shape of BrF3, and write equations for the reactions of sodium bromide with sulfuric acid and copper(II) with iodide.
Physical Chemistry · Inorganic Chemistry · 3.1.3 Bonding · 3.1.7 Oxidation, Reduction and Redox Equations · 3.2.3 Group 7(17), The Halogens · 3.2.5 Transition Metals · 3.2.6 Reactions of Ions in Aqueous Solution
- Question 6 9 marks
Answer questions about the operation, electrode half-equations, electrolyte, and EMF of an alkaline hydrogen-oxygen fuel cell.
Physical Chemistry · 3.1.11 Electrode Potentials
- Question 7 15 marks
Analyze various properties and reactions of vanadium and its compounds, including its position in the periodic table, catalytic activity, electrode potentials, acidity of its aqueous ions, mass spectrometry, and isotope abundance calculations.
Physical Chemistry · Inorganic Chemistry · 3.1.1 Atomic Structure · 3.1.3 Bonding · 3.1.11 Electrode Potentials · 3.2.1 Periodicity · 3.2.5 Transition Metals · 3.2.6 Reactions of Ions in Aqueous Solution
- Question 8 17 marks
Calculate pH, weak acid concentration, analyze a pH curve, select indicators, explain buffer action, and calculate pH change of a buffer solution upon adding acid.
Physical Chemistry · 3.1.12 Acids and Bases