Flashcards
Separating mixtures flashcard #13C
Cards in this deck (10)
- 1Sieving: This is a method of separation of particles from a mixture based on the difference in size of particles. It uses sieve plates for separation of coarse particles from finer particles. Sieve plates have meshed or perforated bottoms which allow only particles of a specific size to pass through it. It is generally used in homes to separate flour from impurities such as pieces of stone, stalk, and husk.
- 2Evaporation: This is a technique used to separate out homogeneous mixtures where there is one or more dissolved salts. It drives off the liquid components from the solid components.
- 3Distillation: Distillation is used to separate liquids from nonvolatile solids, as in the separation of alcoholic liquors from fermented materials, or in the separation of two or more liquids having different boiling points, as in the separation of gasoline, kerosene, and lubricating oil from crude oil. heating a liquid to boiling point, the liquid evaporates, forming a vapor. The vapor is then cooled, usually by passing it through pipes or tubes at a lower temperature. The cooled vapor then condenses, forming a distillate
- 4Decantation: Separation of liquid from solid and other immiscible (non-mixing) liquids, by removing the liquid layer at the top from the layer of solid or liquid below. The process can be carried out by tilting the mixture after pouring out the top layer. Separation of a mixture of oil from water is an example of decantation.
- 5Crystallization: Mass transfer of a solute from the liquid solution to a pure solid crystalline phase occurs. In chemical engineering, crystallization occurs in a crystallizer.
- 6Filtration: Method for separating an insoluble solid from a liquid. When a mixture of sand and water is filtered: the sand stays behind in the filter paper (it becomes the residue ) the water passes through the filter paper (it becomes the filtrate )
- 7Magnetism: Process of separating components of mixtures by using magnets to attract magnetic materials. The process that is used for magnetic separation detaches non-magnetic material with those who are magnetic.
- 8Paper Chromatography: Technique for separating dissolved chemical substances by taking advantage of their different rates of migration across sheets of paper. These are often coloured substances such as food colourings, inks, dyes or plant pigments.
- 9Centrifuging: Technique used for the separation of particles from a solution according to their size, shape, density, viscosity of the medium and rotor speed. The particles are suspended in a liquid medium and placed in a centrifuge tube. The tube is then placed in a rotor and spun at a define speed.
- 10Fisher Scientific. (n.d.). Retrieved July 07, 2020, from https://www.fishersci.se/se/en/scientific-products/centrifuge-guide/centrifugation-theory.html Fisher Scientific. (n.d.). Retrieved July 07, 2020, from https://www.fishersci.se/se/en/scientific-products/centrifuge-guide/centrifugation-theory.htmlFisher Scientific. (n.d.). Retrieved July 07, 2020, from https://www.fishersci.se/se/en/scientific-products/centrifuge-guide/centrifugation-theory.html
Admin. (2019, August 22). Sieving - Definition & Process: Sieving Method Of Separation@byjus. Retrieved July 07, 2020, from https://byjus.com/chemistry/sieving/
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- Flashcards on Separating mixtures flashcard #13C, created by Ovalle Ayala Francisco José on 07/07/2020.
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