| 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 |
Common themes include trends in Group I and VII, the reactivity series, and metal extraction (e.g., Blast Furnace for iron). 2. Common Question Patterns
Many students focus so hard on the theory (Paper 4) that they neglect the Alternative to Practical (Paper 6). Spend time reviewing past papers for Paper 6 to learn how to describe tests for anions, cations, and gases. These are often easy marks if you’ve memorized the "Qualitative Analysis" table. past papers igcse chemistry
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
When you first start, don’t worry about the clock. Solve questions with your textbook open. If you hit a question on Redox reactions that confuses you, look it up immediately. This reinforces learning in context. 2. The Timed Simulation | Topic Area | Typical Weight | Common
These are goldmines. They tell you common mistakes students made in previous years.
Chemistry isn’t just about memorizing the reactivity series or knowing how to balance an equation. It’s about . Examiners often use specific "command words" and look for exact keywords in your answers. Common Question Patterns Many students focus so hard
You will almost always find an extended question on homologous series (alkanes, alkenes, alcohols, carboxylic acids) and polymerization.