Question

conduct an experiment to know the reaction of oxygen with metals and nonmetals

Answer 1

With metals:
Oxygen reacts with active metals like K, Na, Mg, Ca, Al, etc. to form their respective oxides.
Excess oxygen reacts with most active metals like Na and K to form their superoxides:

K + O2 -------> KO2 (Potassium superoxide)
K + O2 --------> K2O (Potassium oxide)

These active metals are kept in kerosene because they react with oxygen of the atmosphere and becomes unreactive.

With non metals:
With non metals, oxygen forms covalent bonds like water (H2O) , carbon dioxide (CO2) etc.

Hydrogen (non metal) reacts with oxygen to form water. Carbon (non metal) reacts with oxygen to form carbon dioxide.

H2 + O2 -----> 2H2O
C + O2 -----> CO2
etc......


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