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maw [93]
3 years ago
13

O que acontece quando uma moeda escurece? (oxidos quimica )

Chemistry
1 answer:
True [87]3 years ago
8 0

Answer:

As moedas ficam sujas devido ao oxigênio do ar reagindo com o metal para formar óxido de cobre. Eles se tornam mais escuros à medida que envelhecem, à medida que a camada de óxido aumenta. O vinagre é um ácido (ácido acético) que pode ser usado para limpar superfícies e remover os óxidos indesejados.

Explanation:

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