Separating Mixtures

describe filtration (2 points)

- separates an insoluble solid from a liquid

- uses an semipermeable material to hold back a solid while liquid passes through

describe paper chromatography (2 points) (1 of them is how you do it)

- used to separate liquid and dissolved solids

- place the substance to be separated on chromatography paper, place the end of the paper in a suitable solvent and wait for capillary action to draw the solvent and separated substances up the paper

describe crystallisation (2 points)

- allows crystals to form in a saturated solution as the solvent evaporates

- as the solvent evaporated from the saturated solution, the solid is forced to solidify, forming crystals

describe simple distillation (2 points)

- simple distillation is a method for separating the solvent from a solution. For example, water can be separated from salt by simple distillation

- this works because water has a lower boiling point than salt