Study /Small discoveries.
QCAA · YEAR 12 · CHEMISTRY 2025 V1.3
Small discoveries.
Bigger understanding.
Chemistry, one idea at a time. Explore a model, turn over a problem, and put your understanding to the test.
0 / 29 lessons exploredLearn at your own pace
03
UNIT 3Equilibrium, acids and redox reactions
Chemical equilibrium systems · Oxidation and reduction
14 lessonsExplore syllabus
04
UNIT 4Structure, synthesis and design
Properties and structure of organic materials · Chemical synthesis and design
15 lessonsExplore syllabus
PAST-PAPER PRACTICE
Meet the real questions.
Selected QCAA 2025 exam questions, worked explanations and links to the complete official papers.
Checking mock exam access…32 original question cards · 80 marks · 2 h 10 minAccount required · pass any 30 eligible Year 12 practice questions29 lessons and 145 original practice questions, including 12 graph, diagram and data-table short responses, grouped around the current syllabus. This is a core revision pathway; use the official syllabus for the full assessment scope. Year 12 covers Units 3 and 4.