Sodium and oxygen are combined to form some kind of oxide of sodium, but there are three different ones. The specific kind produced will be determined by the conditions under which oxidation occurs. When burned in air, sodium will form sodium peroxide(Na2O2). If there is a limited amount of oxygen, sodium oxide (Na2O) will form. Lastly, sodium superoxide (NaO2) will be produced if sodium is burned in oxygen under pressure. Wikipedia has some extra information, and a link is provided.
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Sodium hydroxide is composed of sodium (Na), oxygen (O), and hydrogen (H) atoms. The chemical formula for sodium hydroxide is NaOH.
Sodium nitrate is formed by the combination of sodium, nitrogen, and oxygen. The chemical formula for sodium nitrate is NaNO3.
The word equation for the reaction between sodium and oxygen is: sodium + oxygen -> sodium oxide. This reaction results in the formation of sodium oxide.
The word equations for the reactions of sodium with oxygen are: "sodium + oxygen → sodium oxide" and "sodium + oxygen → sodium peroxide." The chemical equation for the formation of sodium oxide is 4Na + O2 → 2Na2O, and for the formation of sodium peroxide is 2Na + O2 → Na2O2. These reactions illustrate the different oxidation states of sodium when it reacts with oxygen.
Sodium nitrate is composed of sodium (Na), nitrogen (N), and oxygen (O) elements.