Physics, 21.11.2019 18:31 PlaneGamer5678

Anew statue of the town founder is erected in the park. at the unveiling, the statue is a orange-brown copper. after a year, the statue looks blue-green. has a physical or chemical change taken place?

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Anew statue of the town founder is erected in the park. at the unveiling, the statue is a orange-bro...