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Introduction to Electrochemistry

Introduction to Electrochemistry. What are batteries? What are batteries used for?. ?. How do batteries work?. ?. Batteries. How do batteries work?. Electrical energy. Chemical energy. Batteries. How do batteries obtain chemical energy?. ?. Any Ideas.

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Introduction to Electrochemistry

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  1. Introduction to Electrochemistry

  2. What are batteries? What are batteries used for?

  3. ? How do batteries work? ? Batteries

  4. How do batteries work? Electrical energy Chemical energy Batteries

  5. How do batteries obtain chemical energy? ? Any Ideas

  6. What type of chemical reactions occur in batteries that produce electrical energy?What are the characteristics of these chemical reactions?

  7. Think individually No call outs please! Hint: Observe what happens to the reactants in terms of electron transfer (exchange of electrons).

  8. Think individually. No call outs please! Thumbs up if you know the answer!! Test your understanding! Which of the following is an example of the type of chemical reaction that occurs in batteries and which one of them is not? 1)2NaCl(aq) 2Na(l) + Cl2(aq) 2) 2Al(s) + Fe2O3(s)  Al2O3(s) + 2Fe(s) 3) Ni(OH)2(s) + H2SO4(aq) → NiSO4(aq) + 2H2O(l) 4) Zn(s) + HgO(s) ZnO(s) + Hg(l)

  9. Redox Reactions • Occur in batteries • Exchange of electrons take place • One of the reactant loses electrons and the other gains elctrons

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