Types of Mixtures separations

Types of Mixtures separations

1. Magnetism

   • Magnetism is ideal for separating mixtures of two solids with one part having magnetic properties. Some metals like iron, nickel and cobalt have magnetic properties whiles gold, silver and aluminum do not. Magnetic elements are attracted to a magnet.
     • Example

2. Hand separation

   • This is a basic method of separating substances. It involves picking out substances by hand and separating them from others. It is a manual process and used when the components of the mixture to be separated are large and easily distinguished. Removing almonds from a nut mixture, collecting shells on the beach or separating recyclable plastics from a mixture of plastics, all involve handpicking.
     • Example

3. Filtration

   • This is a more common method of separating an insoluble solid from a liquid. An example of such a mixture is sand and water. Filtration is used in water treatment plants, where water from rivers is filtered to remove solid particles.
     • Example

4. Evaporation

   • Evaporation is great for separating a mixture (solution) of a soluble solid and a solvent. The process involves heating the solution until the solvent evaporates (turns into gas) leaving behind the solid residue.
     • Example

5. Chromatography

   • This method is often used in the food industry. It is used to identify chemicals (coloring agents) in foods or inks. For example, if a scientist wants to know how many substances are in a particular blob of ink, paper chromatography can be used.
     • Example

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