This exam focus covers Exam Focus: Combustion within Combustion for GCSE Chemistry. Revise Combustion in Organic Chemistry for GCSE Chemistry with 25 exam-style questions and 15 flashcards. Use this page as part of a wider topic revision path rather than treating it as an isolated fact. It is section 11 of 13 in this topic. Treat this as a marking guide for what examiners are looking for, not just a fact list.
Topic position
Section 11 of 13
Practice
25 questions
Recall
15 flashcards
🎯 Exam Focus: Combustion
very-high Balancing equations (2-3 marks): Balance C first, then H, then O. Common for both complete and incomplete combustion.
high Compare combustion types (3 marks): Products, flame colour, oxygen supply, energy released, safety considerations.
high CO toxicity explanation (2 marks): Must mention "binds to haemoglobin", "prevents oxygen transport", and "colourless and odourless".
State symbols matter: CO₂(g), H₂O(l), C(s), CO(g). Including correct state symbols earns marks in 6-mark questions.
Edexcel 1CH0: Examined in Paper 2 (1CH0/2). Edexcel CP9 covers combustion of alcohols — questions on this practical test experimental design and data analysis. In Edexcel-style questions, the command word "Suggest" appears frequently — use your chemistry knowledge to apply to an unfamiliar context.
Keep building this topic
Read this section alongside the surrounding pages in Combustion. That gives you the full topic sequence instead of a single isolated revision point.
Practice Questions for Combustion
What are the only products formed during the complete combustion of a hydrocarbon?
Explain why carbon monoxide (CO) is toxic to humans. [3 marks]
Quick Recall Flashcards
25 questions on Combustion — practise free
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