AQA GCSE Combined Science: Trilogy Chemistry Paper 1 (Higher), 2018
Every question from AQA GCSE Combined Science: Trilogy Chemistry Paper 1 (Higher), 2018: 8 questions, 70 marks, each with its mark scheme and topic.
- Question 1 8 marks
Answer questions about the electrolysis of copper chloride solution, including products at the electrodes, reactivity of copper, and calculations using experimental results and concentration data.
Chemistry · C3: Quantitative Chemistry · C4: Chemical Changes
- Question 2 8 marks
Compare the electronic structures of sodium and chlorine, describe electron transfer when they form sodium chloride, and complete the exothermic reaction profile.
Chemistry · C1: Atomic Structure and the Periodic Table · C2: Bonding, Structure and the Properties of Matter · C5: Energy Changes
- Question 3 6 marks
Explain how to correct a flawed method so that pure crystals of copper sulfate are prepared from an acid and an insoluble base or carbonate.
Chemistry · C4: Chemical Changes
- Question 4 9 marks
Answer short questions about halogens involving state symbols, dot-and-cross bonding in fluorine, electron number in F2, balancing the reaction of aluminium with bromine, and explaining why chlorine is more reactive than bromine.
Chemistry · C1: Atomic Structure and the Periodic Table · C2: Bonding, Structure and the Properties of Matter
- Question 5 9 marks
Explain how structure and bonding determine the high melting point of diamond, the conditions for sodium chloride to conduct electricity, and how sodium conducts thermal energy.
Chemistry · C2: Bonding, Structure and the Properties of Matter
- Question 6 12 marks
Identify the products of thermal decomposition of Group 2 carbonates and use relative formula mass and a graph of gas volume against mass heated to calculate a metal identity, gradient, and the relative formula mass of another carbonate.
Chemistry · C1: Atomic Structure and the Periodic Table · C3: Quantitative Chemistry · C5: Energy Changes
- Question 7 8 marks
Identify four white oxide solids from their solubility and pH results, then calculate the pH after diluting one acidic solution.
Chemistry · C4: Chemical Changes
- Question 8 10 marks
Answer questions about reactions of iron and magnesium with hydrochloric acid and iron chloride, including naming a product, separating unreacted iron, calculating the mass of iron produced, and identifying the species reduced with a reduction half-equation.
Chemistry · C3: Quantitative Chemistry · C4: Chemical Changes