QCE ChemistryPractice Examination 12

This paper covers

• QCAA Chemistry Units 3 & 4 (General Senior Syllabus 2025 v1.3) full External Assessment, contextualised on the comparison of polylactic acid (PLA) with polyethylene (PE) in biodegradable packaging
• Paper 1 Section A: 20 single-best-answer multiple-choice (1 mark each) spanning equilibrium/Kc, Le Chatelier, Bronsted-Lowry acid-base, pH/pOH/Ka, redox oxidation states and E°cell, organic structure/IUPAC naming/isomerism, addition vs condensation polymers, and stoichiometry
• Paper 1 Section B: 8 short/extended-response questions (38 marks) on dynamic equilibrium and Kc, weak-acid pH from Ka, acid-base titration and standardisation, redox half-equations and galvanic cells, organic nomenclature and intermolecular forces, condensation vs addition polymerisation mechanisms
• Paper 2 Section C: 8 short/extended-response questions (52 marks) integrating ICE-table equilibrium, buffer chemistry, limiting reagent and percentage yield, multi-step organic synthesis, atom economy and green chemistry, combustion CO2 footprint analysis, and AO3/AO4 evaluation of PLA-vs-PE trade-offs
• Assessment Objectives AO1 (describe/explain), AO2 (apply/calculate/determine/deduce), AO3 (analyse/compare/contrast) and AO4 (interpret/evaluate/justify) at the Band A standard, with every worked calculation shown step-by-step and arithmetically verified, and every MCQ key mapping to exactly one option

Students are permitted to bring into the examination the materials normally allowed for this subject. Answer all questions in the spaces provided.

This is an ATARMAxxing practice paper. It is not an official examination and is not affiliated with, endorsed by, or produced by the VCAA, NESA or the QCAA.