he0gaubong
18.03.2021 •
Chemistry
Is changing the color of the coin from copper to silver a physical or chemical change?
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Ответ:
physical
Explanation:
The zinc (which was already silver) coated the penny. The NaOH dissolved the zinc. (that was what made the water murky) And small pieces of zinc adhered to the penny (coated) It was a physical change because no NEW color was created.
Ответ: