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Ouro ou mentira? 😳🧪 Esse ácido nítrico aqui não perdoa… O teste com ácido nítrico é um método usado para verificar a autenticidade do ouro, especialmente em joias. Ele se baseia na reação do ácido com diferentes metais, permitindo identificar se a peça é de ouro puro ou apenas folheada. O ouro puro não reage ao ácido nítrico, enquanto metais base ou prata folheada a ouro podem apresentar reações como mudança de cor. Aposto que você vai se surpreender com o resultado desse teste. 👉 Com
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Cargando
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