AQA GCSE Combined Science: Trilogy Chemistry Paper 1 (Higher), 2020
Every question from AQA GCSE Combined Science: Trilogy Chemistry Paper 1 (Higher), 2020: 7 questions, 70 marks, each with its mark scheme and topic.
- Question 1 9 marks
Answer short questions about aluminium extraction, including atomic structure, reduction, electrolysis of aluminium oxide, electrode wear, and charge carriers in graphite, molten ionic compounds and metals.
Chemistry · C1: Atomic Structure and the Periodic Table · C2: Bonding, Structure and the Properties of Matter · C4: Chemical Changes
- Question 2 8 marks
Answer short questions about covalent bonding, including limitations of ball-and-stick models, intermolecular forces in ice, identifying a molecular formula, and properties and examples of giant covalent structures.
Chemistry · C2: Bonding, Structure and the Properties of Matter
- Question 3 6 marks
Plan a method to test the hypothesis that the same mass of any metal carbonate produces the same mass of carbon dioxide when thermally decomposed, using mass measurements before and after heating.
Chemistry · C3: Quantitative Chemistry · C5: Energy Changes
- Question 4 12 marks
Answer a set of short questions about acid reactions, preparing a soluble salt by reacting zinc oxide with hydrochloric acid, crystallisation, neutralisation, pH changes, balancing an equation, and hydrogen ion concentration after dilution.
Chemistry · Required Practicals · C4: Chemical Changes · C3: Quantitative Chemistry · Chemistry Required Practicals
- Question 5 14 marks
A student investigates the temperature change when magnesium is added to copper sulfate solution, interpreting a temperature–time graph, explaining the cooling, identifying a less reactive replacement metal, and calculating the mass of copper sulfate in a sample of solution.
Chemistry · Required Practicals · C3: Quantitative Chemistry · C4: Chemical Changes · C5: Energy Changes · Chemistry Required Practicals
- Question 6 10 marks
Answer questions on alpha particle scattering, the size of a gold atom, and a reacting-masses calculation for gold reacting with chlorine.
Chemistry · Physics · C1: Atomic Structure and the Periodic Table · C3: Quantitative Chemistry · P4: Atomic Structure
- Question 7 11 marks
Explain electron transfer in the formation of caesium oxide, explain why caesium is more reactive than sodium, and explain why Mendeleev placed tellurium before iodine in the periodic table.
Chemistry · C1: Atomic Structure and the Periodic Table · C2: Bonding, Structure and the Properties of Matter