AQA GCSE Combined Science: Trilogy Chemistry Paper 2 (Higher), June 2025
Every question from AQA GCSE Combined Science: Trilogy Chemistry Paper 2 (Higher), June 2025 (8464): 6 questions, 70 marks, each with its mark scheme and topic.
- Question 1 7 marks
Complete the molecular formula of dodecane and analyze experimental data investigating how temperature affects the viscosity of dodecane.
Chemistry · C7: Organic Chemistry
- Question 2 14 marks
Describe the test for oxygen, explain how the composition of the Earth's atmosphere has changed over time, and outline sources, reduction methods, and effects of methane and sulfur dioxide emissions.
Chemistry · C8: Chemical Analysis · C9: Chemistry of the Atmosphere
- Question 3 10 marks
Answer questions about crude oil fractions, finite resources, calculating the volume of petrol from barrels of crude oil, petrochemical products, cracking methods, and testing for alkenes.
Chemistry · C7: Organic Chemistry · C10: Using Resources
- Question 4 15 marks
Analyze the production of methanol from carbon monoxide and hydrogen, focusing on formulations, dynamic equilibrium, reaction conditions, catalysts, and balancing chemical equations.
Chemistry · C3: Quantitative Chemistry · C6: The Rate and Extent of Chemical Change · C8: Chemical Analysis
- Question 5 13 marks
Investigate factors affecting the rate of reaction using disappearing cross and gas collection methods, including explaining collision theory, identifying hydrogen gas, and calculating the rate from a tangent at 75 seconds.
Chemistry · C6: The Rate and Extent of Chemical Change · C8: Chemical Analysis
- Question 6 11 marks
Calculate the total mass and number of atoms of gold in smartphones, and describe biological extraction methods such as bioleaching and phytomining.
Chemistry · C3: Quantitative Chemistry · C10: Using Resources