Question

what happens when metal reacts with oxygen? give an example to support your answer​

Answer 1

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.

Answer 2

Answer:

metal + oxygen-------------> metal oxide

Explanation:

copper+ oxygen ----> copper oxide

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