do all metals readily react with oxygen?
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Explanation:
All metals react with oxygen except silver (Ag(s)), platinum (Pt(s)) and gold (Au(s)).
In general, metals react with oxygen to form metal oxides.
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Answer:
Many metals react with oxygen to form metal oxides. Potassium and sodium are soft metal which are easily cut exposing a shiny surface which changes to dull rapidly. The change from shiny to dull is called tarnishing. Potassium burns with a lilac flame when heated in air.
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