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Day 3

Day 3. Separation Techniques. Day 3. Mixtures may be separated by:. Physical means using implements such as thongs, forks, even fingers. Day 3. What kind of materials may be separated by magnets?. Mixtures may be separated by:. Using a magnet. Day 3. Mixtures may be separated by:.

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Day 3

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  1. Day 3

  2. Separation Techniques Day 3

  3. Mixtures may be separated by: Physical means using implements such as thongs, forks, even fingers Day 3

  4. What kind of materials may be separated by magnets? Mixtures may be separated by: Using a magnet Day 3

  5. Mixtures may be separated by: Using a filter paper, sieve or strainer; used when the solid particles have different sizes Day 3

  6. Mixtures may be separated by: Evaporating the liquid, thus exposing the other material Day 3

  7. Separation Techniques for other materials Day 3

  8. PRECIPITATION Formation of a solid during a chemical reaction Day 3

  9. PRECIPITATE SUPERNATE Solid formed after the reaction Liquid remaining above the solid Day 3

  10. Daily Application of Precipitation Sewage treatment Pigments and dyes Day 3

  11. Precipitation may be used in treating HARD WATER Hard water is water with calcium carbonate content Precipitation may be used in order to remove CaCO3 This makes the water “softer”. Day 3

  12. SUBLIMATION Solid to gas, without going through the liquid phase Day 3

  13. Daily application of sublimation Naphthalene in moth balls Dry ice (CO2(s)) Day 3

  14. Complete removal of water while leaving the composition and structure of the materials unchanged Used in foods, pharmaceutical companies, biological samples and flowers FREEZE DRYING Day 3

  15. What happens if freeze dried food is left open, in room temperature? Daily application of freeze drying Preserve food Without compromising the nutritional value Easier transportation Day 3

  16. Sources • Istockphotos.com • fortunetdg.com.hk • sphs.spusd.net • zazzle.com • backpacking-in-europe.com • yourfoodstorage.com • rhoind.com • water-technology.net • http://www.youtube.com/watch?v=iT5REnK0TAg Day 3

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