Notes on gas chromatography for the OCR A-level chemistry A specification on a single page. It particularly emphasises knowing how separation is achieved, a common topic for tough questions where getting the phrasing right is absolutely essential. There’s pictures and diagrams, explanation of a calibration curve and links to three top recommended videos.
Questions looked at to prepare these notes (and recommended for revision) included:
- October 2020 paper 1, question 13 (MCQ)
- June 2015 paper 4, question 1
- June 2012 paper 4, question 5
- June 2018 unit 2, question 21 c i)
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£1.75