#129
4.7.1.1 Crude oil, hydrocarbons and alkanes
Paper 2 · Higher combined
Spec reference: 4.7.1.1 (under 4.7.1).
What you need to know
- (Key facts / definitions / equations for this spec point)
Support videos
- FreeScienceLessons (topic playlist): (use links below)
- PMT videos hub (Organic chemistry): https://www.physicsandmathstutor.com/chemistry-revision/gcse-aqa/organic-chemistry/
Self-assessment (checklist)
- I can describe how crude oil is formed.
- I can describe the composition of crude oil.
- I can give a definition for the term ‘hydrocarbon’.
- I can recall the general formula for the homologous
- I can name the first four members of the homologous
- I can recognise and write chemical formulae for the
- I can recognise and draw displayed structural formulae
- I can name some fuels that are produced from crude
Key steps (method)
- Identify what the question is testing and use precise chemistry vocabulary.
- If it’s a calculation: write the equation/formula first, then substitute carefully.
Common mistakes
- Missing units/state symbols when asked.
- Giving a statement without linking cause → effect.
Exam-style questions (quick)
- Define the key term(s) for this point in the spec.
- Explain a typical property/result using particle/bonding ideas.
- Do a short calculation or interpretation step relevant to this point.
Practice questions
- PMT: Organic chemistry (questions + notes): https://www.physicsandmathstutor.com/chemistry-revision/gcse-aqa/organic-chemistry/