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Question:

Will the weight change after the copper wire is burned?Is it heavy, light, or unchanging? What is the reason?

Will the weight change after the copper wire is burned?Is it heavy, light, or unchanging? What is the reason?

Answer:

Will become heavier, because copper (Cu) combustion in the air will produce copper oxide (CuO), the quality will increase
It becomes heavy! A compound that produces copper in air!
It becomes heavier. The copper wire is heated and combined with oxygen in the air to form black copper oxide. Of course, it is heavier than before

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