atoms

atoms

1. diffusion is the movement of particles through a liquid or gas

   • potassium manganate is used to show this process as it shows the random motion of particles in a liquid

2. filtration- this is used to separate an insoluble solid from a liquid it can also be used in purification aswell

   • crystallisation is used to separate a soluble solid from a solution by evaporating off the liquid and then cooling the solvent so that crystals are formed

3. chromatography is another method to separate mixtures

   • it works by different dyes separating at different rates so they move up the paper

4. distillation is used to separate out solutions the solution is heated and the part of the solution that has the lowest boiling point evaporates and then is condensed in the side arm of the flask

   • you can use this method to get pure water from sea water

5. fractional distillation is used to separate a mixture of liquids

   • this happens because all the different parts of the solutions have different boiling points
     • fractional distillation is mainly used for crude oil

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