From the given compounds, write down the formulas of oxides, name them: NaOH; Na2O; Na2SO4; SO2; H2S; CaO.

NaOH – sodium hydroxide,

Na2O – sodium oxide,

Na2SO4 – sodium sulfate salt,

SO2 – tetravalent sulfur oxide,

H2S – hydrogen sulfide,

CaO – calcium oxide.

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



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