EVERYDAY SCIENCE

Detailed explanation-1: -Melting point is thee temperature at which a solid changes into liquid. It is a change of physical state of a substance in which the chemical composition do not change. So, it is catogerised as physical properties.

Detailed explanation-2: -Physical properties include color, density, hardness, and melting and boiling points. A chemical property describes the ability of a substance to undergo a specific chemical change.

Detailed explanation-3: -We already learned that melting point is a physical property since we observe a state change from solid to liquid, but its chemistry remains as it is. Further, it comes back to the solid-state if we cool the liquid. This process shows that a change in the substance’s melting point is also a physical property.

Detailed explanation-4: -melting point, temperature at which the solid and liquid forms of a pure substance can exist in equilibrium. As heat is applied to a solid, its temperature will increase until the melting point is reached. More heat then will convert the solid into a liquid with no temperature change.

Detailed explanation-5: -A substance’s boiling point is a physical property. For instance, when water (H2O) boils, so when it converts from a liquid to a gas or water to steam, it is still water. The chemical identity is still H2O. The chemical property hasn’t changed, only its physical property.