The formation of compound takes place by the combination of two or more different atoms. The combination of atoms takes place in a definite proportions. Compounds with different proportions of atoms have different properties.
Water () is composed of the same element as hydrogen peroxide () that is hydrogen () and oxygen (). The combination of hydrogen and oxygen atoms in water is in ratio whereas the combination of hydrogen and oxygen atoms in hydrogen peroxide is in ratio. So, the properties of water and hydrogen peroxide are different as the arrangement of atoms is different in the compound.
Hence, the correct option is they have different properties because the arrangement of atoms is different.
The _____melting point________ is the temperature at which a substance changes from solid to liquid; _______boiling point_________ is the temperature at which a substance changes from a liquid to as gas; _______vapourisation_________ is the process by which atoms of molecules leave a liquid and become a gas.
The Mole-Volume Relationship: Avogadro's Law. A plot of the effect of temperature on the volume of a gas at constant pressure shows that the volume of a gas is directly proportional to the number of moles of that gas. This is stated as Avogadro's law.