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Homework Help: Color change Chemical reaction help

  1. Dec 7, 2011 #1
    I am working on a project that needs 2 chemicals to react and change colors. The catch is they most likely need to be or come in a powder form, non toxic, and relatively inexpensive.

  2. jcsd
  3. Dec 7, 2011 #2


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    Staff: Mentor

    To clarify: you want to mix two powders and observe color change?
  4. Dec 7, 2011 #3
    yes, that is correct
  5. Dec 7, 2011 #4
    ....without heat
  6. Dec 7, 2011 #5


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    Science Advisor
    Homework Helper
    Gold Member

    Try tumeric and methylene blue. Mix the yellow powder with the blue one and it turns green! How cool is that?
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