A factory uses four methods to make different liquid products.
Which method produces a formulation?
Combine several components in measured quantities so the product has the required properties.
Isolate one compound, then bottle it without anything else mixed in.
Bottle a naturally occurring mixture without adding any other substances.
Mix two liquids in proportions that vary from one batch to the next.
113 exam-style questions on AQA GCSE Chemistry 8.1 Purity, formulations and chromatography, covering 8.1.1 Pure substances, 8.1.2 Formulations, and 8.1.3 Chromatography. Each one has a worked solution and a mark scheme showing where the marks go.