Ionic, Covalent, or Both?
Tell whether each compound is ionic (metal-nonmetal), covalent (nonmetal-nonmetal) or BOTH (having a polyatomic ion)
1. CaCl2
2. CO2
3. H2O
4. BaSO4
5. K2O
6. NaF
7. Na2CO3
8. CH4
9. SO3
10. LiBr
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