* It is made up of two or more different elements. In this case, hydrogen peroxide is made up of hydrogen (H) and oxygen (O).
* The elements are chemically bonded together in a fixed ratio. The ratio of hydrogen to oxygen in hydrogen peroxide is 2:2, which can be simplified to 1:1.
* It has properties different from the individual elements that compose it. Hydrogen peroxide is a colorless liquid with strong oxidizing properties, while hydrogen is a colorless gas and oxygen is a colorless gas.
Therefore, due to its composition and unique properties, hydrogen peroxide is classified as a compound.
