Whether you are taking Cambridge (CIE), Edexcel, or AQA, each board has a specific rhythm. Past papers help you understand the weightage of Multiple Choice (Paper 2/1), Theory (Paper 4/3), and Practical alternatives (Paper 6).
These are released by exam boards when the syllabus changes. past papers igcse chemistry
| Topic Area | Typical Weight | Common Question Formats | | :--- | :--- | :--- | | | ~20% | Empirical formula, reacting masses, concentration calculations | | Organic Chemistry | ~15% | Alkanes vs. alkenes, cracking, fermentation, polymerisation | | Electrochemistry | ~12% | Electrolysis of brine, copper refining, predicting products | | Energy Changes | ~10% | Exothermic/endothermic, bond energy calculations | | Acids, Bases & Salts | ~15% | Titration, salt preparation, pH scale, oxides | | Qualitative Analysis | ~10% | Test for ions (e.g., flame tests, precipitates), gases | Whether you are taking Cambridge (CIE), Edexcel, or
25.0 cm³ of 0.100 mol/dm³ hydrochloric acid neutralises 20.0 cm³ of sodium hydroxide solution. Calculate the concentration of the NaOH solution. HCl + NaOH → NaCl + H₂O | Topic Area | Typical Weight | Common
While you should practice everything, these areas are notorious for appearing in IGCSE Chemistry past papers:
These are goldmines. They tell you common mistakes students made in previous years.
Instead of doing a full exam, you can find worksheets that focus solely on one chapter, like "Acids, Bases, and Salts." Final Tip: Don’t Ignore Paper 6