AQA 8462 · Papers 1 and 2
Chemistry practice paper
Structure, moles, rates, organic chemistry and analysis in exam style.
Every question is written for practice and tied to a real specification point. Marking updates progress for those spec points, not for KS3 objectives.
Exam-style paper
Chemistry practice paper
8 questions, 28 marks. Answer everything, then mark the paper to see the mark scheme. There is no timer — the 35 minutes is only a guide.
1. Chlorine-35 and chlorine-37 are isotopes. What differs between them?
3 marks4.1 · Atomic structure and the periodic table
2. Why does sodium chloride conduct electricity when molten but not when solid?
4 marks4.2 · Bonding and structure
3. What is the relative formula mass of Ca(OH)₂ (Ca 40, O 16, H 1)?
4 marks4.3 · Quantitative chemistry
4. During electrolysis of copper chloride solution, what forms at the negative electrode?
4 marks4.4 · Chemical changes
5. A reaction profile shows products lower in energy than reactants. What does this mean?
3 marks4.5 · Energy changes
6. Increasing pressure on N₂ + 3H₂ ⇌ 2NH₃ shifts the equilibrium. Which way and why?
4 marks4.6 · Rates and equilibrium
7. Why is cracking carried out on long-chain hydrocarbons?
3 marks4.7 · Organic chemistry
8. A lit splint gives a squeaky pop. Which gas is present?
3 marks4.8 · Chemical analysis