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    | • | How are
    elements given symbols? 
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    |  |  
    | • | Chemical symbols
    can be one or two letters. The first 
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    |  |  
    |  | letter is always
    a capital case and the second letter is 
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    |  |  
    |  | always a small
    case. Some symbols are taken from the 
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    |  |  
    |  | Latin or German
    names of elements. 
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    |  |  
    | • | Na = sodium, K =
    potassium, Fe = iron, Cu = copper, Ag 
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    |  |  
    |  | = silver, 
    Sn = tin, Sb = antimony, W = tungsten, 
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    |  |  
    |  | Au = gold, Hg =
    mercury, Pb = lead 
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