Answered

Which two substances can not be broken down by chemical means?
1) C and Cao 2) C and Cu 3) CO2 and CuO 4) CO2 and Cu

Answer :

Sweeteany34

Answer:

2) C and Cu

Explanation:

Substances that cannot be broken down by chemical means are further known as elements! Therefore, the only valid answers would be ones including only elements.

We can automatically rule out 3 and 4 because CO2 stands for carbon dioxide (a compound!... Not element)

This leaves us with 1 and 2 - Now, 1 includes carbon, but ALSO includes Calcium oxide (a Compound!)

The second option includes C and Cu. These are the element symbols standing for Carbon and Copper!

Hope I was of assistance! #SpreadTheLove! <3

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