The box shows some methods that can be used to separate mixtures.
crystallisationdissolvingevaporationfiltrationpaper chromatographysimple distillationfractional distillation \begin{array}{|ccc|} \hline \text{crystallisation} & \text{dissolving} & \text{evaporation} \\ \text{filtration} & \text{paper chromatography} & \text{simple distillation} \\ \text{fractional distillation} & & \\ \hline \end{array} crystallisationfiltrationfractional distillationdissolvingpaper chromatographyevaporationsimple distillationFrom the box, select the most appropriate method for each of the following separation processes.
You may use each method once, more than once, or not at all.
Separating precipitated silver chloride solid from an aqueous reaction mixture.
Obtaining pure liquid acetone solvent from a solution of copper(II) chloride dissolved in acetone.
Extracting soluble salicylic acid from a sample of finely crushed willow tree bark.
Separating the components of a mixture of water-soluble food dyes.
Separating a liquid mixture of hexane (boiling point 69∘C69^\circ\text{C}69∘C) and heptane (boiling point 98∘C98^\circ\text{C}98∘C).
29 exam-style questions on Edexcel IGCSE Chemistry Elements, compounds and mixtures. Each one has a worked solution and a mark scheme showing where the marks go.