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BartSMP [9]
4 years ago
14

During chemical reactions the bonds between atoms break and new bonds form.

Chemistry
1 answer:
Elis [28]4 years ago
5 0

Answer:

The equation is CuCO₃ ⇆ CuO + CO₂. So it's a decomposition reaction, so a solid broke down into two other substances. This means that bonds were broken, so the reaction must be <u>endothermic.</u>

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