Interpret a chromatogram to identify whether a sample is pure or a mixture.

For this page, chromatography is revised through the specific task: Interpret a chromatogram to identify whether a sample is pure or a mixture. The approved objective is: Interpret a chromatogram to identify whether a sample is pure or a mixture. The key evidence is spot and solvent-front distances, and the result to look for is Rf or separation evidence. This makes it different from nearby objectives because the answer must stay anchored to Interpret a chromatogram to identify whether a sample is pure or a mixture, not another Chemical analysis test. Useful curriculum keywords include chromatogram and mixture. Keep the method, observation, and conclusion separate so the answer does not confuse gas tests, flame tests, cation tests, anion tests, chromatography, pure substances, or formulations. A strong exam response states the test or measurement, describes what is seen, and then links that evidence directly to Chromatography.