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Chemistry flashcards
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- 1Sieving Is a technique to separate particle f different sizes. ex. Separating stones from sand
- 2Evaporation Technique used to separate homogeneous mixtures where there are salts. Drives off the liquid components from the solid ones. Ex. The process to get table salt
- 3Distillation separate mixtures comprised of two or more pure liquids. A liquid is evaporated and then it's condensed. Ex. Salt water that is turned into fresh water
- 4Filtration Method used to separate out substances in mixtures comprised of particles Water filters make fresh water
- 5Crystallization the solution solvent evaporates, and the concentration of the solute reaches saturation point. Then the solute will begin to crystallize. Ex. Ice and snowflakes
- 6Decantation Process of separating liquid from solid and other non- mixing liquid. It can be carried out by tilting the mixture after pouring out the top layer. Ex. Decantation of oil and vinegar
- 7Magnetism Separating mixtures by using magnets to attract other magnetic materials. Ex. Removing iron bearing minerals from silica sand used to produce glass
- 8Paper chromatography Is a method to separate colored chemicals, involves using two solvents and rotating the paper 90° in between. Is useful to separate complex compounds with a similar polarity. Ex. To identify clues at a crime scene like blood, ink, or drugs.
- 9Centrifuging Is used to separate particles from a solution according to their size, shape, density, viscosity of the medium and rotor speed. Ex. Removing fat from milk to produce skimmed milk
- 10Bibliography Libretexts. (2019, October 16). 2.8: Methods for Separating Mixtures. Retrieved July 10, 2020, from https://chem.libretexts.org/Bookshelves/Introductory_Chemistry/Book%3A_Introductory_Chemistry_(CK-12)/02%3A_Matter_and_Change/2.08%3A_Methods_for_Separating_Mixtures#:%7E:text=to%20one%20another.-,Evaporation,until%20no%20more%20liquid%20remains.Paterson, D. (2018, May 23). Evaporation, filtration and crystallisation. Retrieved July 10, 2020, from https://edu.rsc.org/cpd/evaporation-filtration-and-crystallisation/3009017.article
Z, E. (2014, March 23). What type of mixtures can be separated by centrifugation? | Socratic. Retrieved July 10, 2020, from https://socratic.org/questions/what-type-of-mixtures-can-be-separated-by-centrifugation
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- Flashcards on Chemistry flashcards, created by Barrera Marroquín Valeria Michelle on 11/07/2020.
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