This comparison covers Interpreting Chromatogram Results within Chromatography for GCSE Chemistry. Revise Chromatography in Chemical Analysis for GCSE Chemistry with 20 exam-style questions and 15 flashcards. This topic appears regularly enough that it should still be part of a steady revision cycle. It is section 7 of 13 in this topic. Use this comparison to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 7 of 13
Practice
20 questions
Recall
15 flashcards
⚖️ Interpreting Chromatogram Results
| Observation | Conclusion |
|---|---|
| One spot (moved up) | Sample is probably a single pure substance |
| Multiple spots | Sample is definitely a mixture of different substances |
| Spot stays at start line | Substance is insoluble in this solvent — try a different one |
| Spot at same position as known standard | Likely to be the same substance (same Rf value) |
| Streaky, elongated spots | Sample spot was too large; technique needs improvement |