Which of these processes indicates that smelting copper is a chemical change

Chemistry

2 answers:

BlackZzzverrR [31]3 years ago

5 0

The correct answer is D:

it involves breaking molecular bonds between copper compounds .

The explanation :

-when we melt a copper it is a physical change because the substance is still copper and have the same shape.

- but for example Burning a copper it is a chemical change. Fire activates a chemical reaction between copper and oxygen.

-The oxygen in the air reacts with the copper and the chemical bonds are broken.

- the chemical change is changing the other compound bonded to the copper atoms.

So, the correct answer is D

german3 years ago

4 0

<span>Answer is d. The material can be phsycal changes into a differnt shape or state (gas, liquid, solid) and its will still be essentially copper. A chemical change is changing what other elements or compound is bonded to the copper atoms</span>

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