GCE Chemistry Past Questions: Complete Guide for Cameroon Students

What the Chemistry papers actually ask

Chemistry is examined under code 0515 at Ordinary Level and 0715 at Advanced Level. The code appears on the paper itself, so it is the quickest way to confirm you are revising the right syllabus before you start. Check the content against the GCE syllabus page rather than assuming last year's topics still apply.

• The multiple-choice paper rewards covering the whole syllabus. Skipped chapters show up here first, because there is nowhere to hide behind a well-written answer.
• The structured and essay paper splits marks across several creditable points per question. One idea written at length earns one mark.
• The practical paper assesses procedure, recording and the handling of results. No amount of theory revision prepares you for it; you need past practical papers specifically.

Where Chemistry marks are actually lost

Candidates who know the chemistry still drop marks in predictable places. These are worth checking on every answer you write:

1. Unbalanced equations. A balanced equation is usually worth a mark on its own, separate from whatever you do with it afterwards.
2. Missing state symbols. (s), (l), (g) and (aq) are frequently creditable. Writing the equation without them gives away marks you have already earned.
3. Significant figures and units. A correct calculation reported without units, or to the wrong precision, is marked down.
4. Describing instead of explaining. “Explain” wants a reason, not a restatement of the observation. This is the most common avoidable loss in the structured paper.
5. Observation without inference. In practical questions, say what you saw and what it tells you. Each usually carries its own mark.

Topics that repeat

Across sessions the same areas come back: moles and the mole concept, acids, bases and salts, rates of reaction, energetics, electrolysis, the periodic table and periodicity, qualitative analysis, and at Advanced Level organic mechanisms and equilibria. Working four or five papers is enough to see which of these the examiners return to most often — and that pattern is more useful than any predicted-questions list, because you derived it yourself from real papers.

How to work a Chemistry paper

Sit it closed-book, under exam time. Mark it strictly against the scheme where you have one, and where you do not, mark your own confidence first: tick, question mark or cross beside each answer. The crosses are already a revision list, produced without any answer key. Then resolve the question marks from your textbook rather than from a friend — looking the rule up yourself is what makes it stay.

Browse every paper by year on the GCE past questions and answers page, or by level on GCE O Level past questions and GCE A Level past questions.