# If a substance reacts with oxygen, what is the chemical reaction most likely?

May 15, 2017

$\text{A combustion reaction}$, which sits under the umbrella of $\text{redox reactions........}$

#### Explanation:

Typically, an element, metal, sulfur, carbon, is OXIDIZED by oxygen gas to give, for instance a metal or element oxide, and of course, the oxygen is reduced in the reaction.

For carbon we could write:

${\stackrel{0}{\text{C"(s) +"O}}}_{2} \left(g\right)$ ${\text{rarr stackrel(+IV)" CO}}_{2} \left(g\right)$

Now this is both a $\text{combustion reaction}$, and a $\text{redox reaction}$. Oxygen gas is reduced from ${\stackrel{0}{O}}_{2}$ to $\text{oxide}$, ${O}^{2 -}$ anion.