Question

water (h₂o) is composed of the same elements as hydrogen peroxide (h₂o₂). why do these substances have different properties?
o the atoms are arranged differently in each molecule.
o the atoms are the same.
o water has more atoms than hydrogen peroxide.
o the molecules are the same.

Explanation:

The chemical properties of a substance are determined by its molecular structure. Water ($H_2O$) and hydrogen - peroxide ($H_2O_2$) have different arrangements of atoms in their molecules, which leads to different properties.

Answer:

The atoms are arranged differently in each molecule.