Copper vessels turn green after using sometimes it is physical change or chemical change?
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it is a chemical change .
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Copper vessels turn green after using sometime.
Because Copper reacts with Oxygen present in the air and become oxidised to CuO.
2Cu + O₂ → 2CuO
Hence, the process is a chemical change.
Because Copper reacts with Oxygen present in the air and become oxidised to CuO.
2Cu + O₂ → 2CuO
Hence, the process is a chemical change.
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