Answer:
The law of conservation mass states that mass is neither created or destroyed in chemical reactions.
Step-by-step explanation:
I'm guessing the copper stayed the same; use the above definition to explain.
The law of conservation of mass states that in a chemical reaction mass is neither created nor destroyed. For example, the carbon atom in coal becomes carbon dioxide when it is burned. The carbon atom changes from a solid structure to a gas but its mass does not change.
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