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Chemical Change

Combination or breakdown of elements to form new substances.

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A Brown Statue of Liberty

Why is the Statue of Liberty green?

One of the most famous monuments in the world, the Statue of Liberty stands guard of New York Harbor.  

License: CC BY-NC 3.0
License: CC BY-NC 3.0

Why does the Statue of Liberty appear brown in the picture on the right? We all know that the Statue is green, but in this painting the Statue is definitely not green.  Why would the painter do this?  This painting shows the Statue of Liberty just after it was unveiled.  Of course, the Statue today is clearly not green.  What could have happened?

Creative Applications

  1. Do some research.  What material is the plating on the statue of liberty made out of?
  2. The statue clearly has changed color.  Why?
  3. Is is possible to remove this green color and restore the Statue back to brown?  What process would work?
  4. Color change is just one indication of the occurrence of a chemical change.  What are some other indications?

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    1. [1]^ License: CC BY-NC 3.0
    2. [2]^ License: CC BY-NC 3.0

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