This exam focus covers Exam Focus: Alkanes within Alkanes for GCSE Chemistry. Topic 38: Alkanes It is section 10 of 12 in this topic. Treat this as a marking guide for what examiners are looking for, not just a fact list.
Topic position
Section 10 of 12
Practice
20 questions
Recall
0 flashcards
🎯 Exam Focus: Alkanes
very-high Formula questions (1-2 marks): Use CₙH₂ₙ₊₂ to determine molecular formula. Must show working.
high Saturated/unsaturated distinction (2 marks): Define saturated as "only single C-C bonds" and contrast with alkenes.
high Drawing structures (2-3 marks): Draw displayed formula with each carbon making exactly 4 bonds.
Common exam question: "Explain what is meant by 'saturated'" — Answer must include "only single C-C bonds" (not just "full of hydrogen").