BRAINCAKEChemical analysis
Revision notes for Chemical analysis in AQA Combined Science: Trilogy (8464). Every lesson in BrainCake comes with R.E.C.I.P.E. recall steps, a quick check and spaced reviews.
- Pure substancesIn chemistry, a pure substance is a single element or compound that is not mixed with any other substance.
- FormulationsA formulation is a mixture that has been designed as a useful product.
- ChromatographyChromatography separates the substances in a mixture and gives information that helps identify them.
- Test for hydrogenHydrogen is a colourless gas with no smell, so we cannot identify it by looking at it.
- Test for oxygenOxygen makes up about one fifth of the air.
- Test for carbon dioxideCarbon dioxide is a colourless gas with no smell.
- Test for chlorineChlorine is a toxic, pale green gas with a sharp, choking smell.