Heat Optimizing Packs by Logan Saland https://padlet.com/logansaland1/12nbd7nv42ngkjrg Logan & Aislynn Saland en-us 2022-04-18 18:47:16 UTC 2022-04-18 19:01:32 UTC hello@padlet.com logansaland1 https://padlet.com/logansaland1/12nbd7nv42ngkjrg/wish/2147390241 Make a heat pack to optimize a chemical reaction ]]> 2022-04-18 18:48:20 UTC https://padlet.com/logansaland1/12nbd7nv42ngkjrg/wish/2147390241 Research logansaland1 https://padlet.com/logansaland1/12nbd7nv42ngkjrg/wish/2147390869 2022-04-18 18:48:52 UTC https://padlet.com/logansaland1/12nbd7nv42ngkjrg/wish/2147390869 Buy materials logansaland1 https://padlet.com/logansaland1/12nbd7nv42ngkjrg/wish/2147391050 2022-04-18 18:48:59 UTC https://padlet.com/logansaland1/12nbd7nv42ngkjrg/wish/2147391050 Test prototype logansaland1 https://padlet.com/logansaland1/12nbd7nv42ngkjrg/wish/2147391212 2022-04-18 18:49:07 UTC https://padlet.com/logansaland1/12nbd7nv42ngkjrg/wish/2147391212 Fix issues logansaland1 https://padlet.com/logansaland1/12nbd7nv42ngkjrg/wish/2147391507 2022-04-18 18:49:21 UTC https://padlet.com/logansaland1/12nbd7nv42ngkjrg/wish/2147391507 Slideshow logansaland1 https://padlet.com/logansaland1/12nbd7nv42ngkjrg/wish/2147391608 2022-04-18 18:49:26 UTC https://padlet.com/logansaland1/12nbd7nv42ngkjrg/wish/2147391608 Present logansaland1 https://padlet.com/logansaland1/12nbd7nv42ngkjrg/wish/2147391702 2022-04-18 18:49:31 UTC https://padlet.com/logansaland1/12nbd7nv42ngkjrg/wish/2147391702 Due logansaland1 https://padlet.com/logansaland1/12nbd7nv42ngkjrg/wish/2147392187 May 23]]> 2022-04-18 18:49:57 UTC https://padlet.com/logansaland1/12nbd7nv42ngkjrg/wish/2147392187 Group Members logansaland1 https://padlet.com/logansaland1/12nbd7nv42ngkjrg/wish/2147392706 Logan Saland and Aislynn Saland]]> 2022-04-18 18:50:27 UTC https://padlet.com/logansaland1/12nbd7nv42ngkjrg/wish/2147392706 logansaland1 https://padlet.com/logansaland1/12nbd7nv42ngkjrg/wish/2147396238
  • Supercooling Sodium Acetate
    1. Becomes saturated
      1. C2H3NaO2
    2. Without a seed crystal, the sodium acetate will remain in solution as it cools
    3. Has a metal disk that provides a site for crystallization when depressed
      1. Forms crystal arrangement→ heat is released
        1. Reusable as it can be regenerated in boiling water to once again form the supersaturated solution
        2.  Metal clicker on inside→ once the pack cools to room temperature, crystallization of sodium acetate is triggered by clicker→ gives the sodium acetate a nucleation point
          1. Exothermic
      2. Vinegar + Baking Soda→ sodium acetate + water 
        1. It has to be done slowly, if not violent
          1.  Evaporation of this solution until crystals just begin to form creates a super-cooled solution of sodium acetate--the sodium acetate remains in solution below its normal crystallization point
            1. The only thing stopping the whole solution from crystallizing is a site for the crystals to begin forming. Cooling the solution and placing it in a plastic bag along with a piece of thin metal that is isolated from the solution forms the chemical hot pack.
      3. Already done heat pack: To initiate the reaction, break the barrier between the solution and the piece of metal and apply pressure to the piece of metal with your finger. As the metal flexes, small irregularities form on the surface of the metal and the sodium acetate begin to crystallize. The process of crystallization generates the heat.
      4. https://www.youtube.com/watch?v=SNF2DO6EXcw

    • ]]>     2022-04-18 18:53:21 UTC https://padlet.com/logansaland1/12nbd7nv42ngkjrg/wish/2147396238     aislynnsaland1 https://padlet.com/logansaland1/12nbd7nv42ngkjrg/wish/2147405864  build a heat pack and optimize it by increasing the temperature or making it last longer.]]> 2022-04-18 19:01:32 UTC https://padlet.com/logansaland1/12nbd7nv42ngkjrg/wish/2147405864