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Homework Help: Interview for science about compost PLEASE answer

  1. May 10, 2010 #1
    1 what makes a lemon and potato battery work?
    2 do you think compost could make a battery?
    3 Could you add anything to compost to make it's ability to power a light bulb better?
    4 Would fully decomposed, halfly-decomposed, or new chunky compost work the best to power a light bulb? why?
    5 What needs to be present for a battery to work such as a lemon or potato battery
    6 What are some ways to test PH? WHat is the best way to test PH?
    7 What are some characteristics of compost?
    8 what are ways to test if an object can power a light bulb?
    9 I'm testing if compost can make a light bulb turn on. How would you go about this?
    10 What does PH have to do with food veggies?
    11 Would moistness of compost affect it's abillity to act as a battery? Why or why not?
    if you can answer ANY of these it would be AMAZING! thanks
  2. jcsd
  3. May 10, 2010 #2
    Pretty specific questions that you have there, but they all stem from the same basic underlying principles. For there to be energy, the energy that we are used to, to do work, for a plant to grow, for an enzyme to function, etc. several things must happen. This is in the form of electron movement and/or the making of and/or breaking of bonds in molecules. In the case of electron movement, there is a negatively charge end and a positively charged end that electrons move to. This energy gradient is responsible for the work to done. The protons (H+) in the acid of the lemon provide the medium for this to happen. These are called oxidation-reduction reactions. Most of the things you described are well described; just type them into google.
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