Chemistry 9701/53 Oct Nov 2012 | Cambridge AS Level Past Papers With Mark Scheme

1. Gas pressure-volume relationships, graphical representation of Boyle's law, effect of temperature on gas behavior, experimental design for pressure-volume measurements.
2. Decomposition of copper(II) carbonate, gas volume prediction for Cu₂O and CuO pathways, mass-based calculations for molar gas volume and completeness verification, hazard management for experimental safety.
3. Density-based concentration determination for sulfuric acid solutions, calibration curve plotting for measured vs. calculated densities, molecular interactions explaining density differences.
4. Error analysis in mass and volume measurements, apparatus limitations for density experiments, procedural adjustments to achieve precise measurements in sulfuric acid calibration experiments.