From the given compounds, write down the formulas of the oxides, call them NaOH; Na2O; Na2SO4; SO4; H2S; CaO?

The substances below are named:

NaOH – sodium hydroxide

Na2O – sodium oxide

Na2SO4 – sodium sulfate salt

SO2 – tetravalent sulfur oxide

H2S – hydrogen sulfide,

CaO – calcium oxide.

Therefore, the following compounds belong to oxides: Na2O – sodium oxide, SO2 – tetravalent sulfur oxide, CaO – calcium oxide.



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