Answer:
The word equation is: Â
[tex]\text { hydrogen peroxide } \rightarrow \text { oxygen gas + water }[/tex]
 This reaction happens when there is the decomposition of hydrogen peroxide into oxygen and water. Thus, the equation would be Â
[tex]H_{2} O_{2} \rightarrow O_{2}+H_{2} O[/tex]
Balancing the equation requires to have the same number of atoms of each element on both the side. To balance this equation we need to add 2 water ([tex]H_2O[/tex]) molecules  and 2  hydrogen peroxide ([tex]H_2O_2[/tex]) molecules  . As we know, oxygen is naturally diatomic. Thus, the balancing equation would be:
[tex]2 H_{2} O_{2} \rightarrow O_{2}+2 H_{2} O[/tex]
