During the experiment i observed that when we put the penny into zinc it turned completely silver after 10 minutes. And when we took the silvered penny out of the zinc and put it into the flame the penny turned gold in about 30 seconds. i think when we put the penny into the zinc, the zinc coated the penny with a layer of silver. i also think when we put the penny into the flame the zinc reacted to the flame by changing colors, it turned gold. i dont think i made real gold. and to test if the penny is real gold we could have bended it when it was still hot.
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