Chemistry

Classify the substances as atomic elements, molecular elements, molecular compounds, or ionic compounds. CO2, HCl, Al2S3, Cd, F2,Ag,O2,NaCl

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  1. what don't you understand?

    Surely you can at least pick out the elements, and then see which are atoms and which are molecules.

    And take a stab at the compounds; the ionic ones usually involve a metal and a halogen.

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