Hello kiddo!
Hydrogen polyoxide is not a thing. However, let me help you understand what "hydrogen peroxide" is, which is a real chemical compound that sometimes people refer to as "hydrogen polyoxide" as a fancy name.
Have you ever heard of water before? It's a clear liquid that you drink to stay healthy and it's also used for many things like washing your hands, watering plants, and taking a bath. Well, hydrogen peroxide (H2O2) is kind of like water, but with one extra oxygen atom.
Now, water is made up of two hydrogen atoms and one oxygen atom (H2O). Hydrogen peroxide has two hydrogen atoms and two oxygen atoms (H2O2).
Hydrogen peroxide is used as a kind of cleaning liquid. When it's put on surfaces like cuts or wounds, it helps kill bacteria and germs. It's also used to bleach hair, and in some teeth whitening products.
But be careful kiddo! Hydrogen peroxide can be harmful if it's swallowed or if it gets in your eyes. It's important to only use it when a grown-up is around to help you.
So, there you have it, hydrogen peroxide - the chemical with the fancy name that is a bit like water but with one extra oxygen atom that is used for cleaning and disinfecting.