ANSWER
The temperature at which it boils is a measure of its physical property
Explanation:
Firstly, we need to define the physical and chemical property of matter
The physical property of matter is characteristic of matter that is not associated with a change in its chemical composition. The physical properties include; color, density, hardness, melting, and boiling point.
The chemical property of matter is characteristic of matter that is associated with a change of matter from one type to another type. The chemical properties include; Flammability, toxicity, acidity, reactivity, etc.
When a liquid is boiled, it changes its state from liquid to vapor, this change of state is associated with the physical property of matter.
Hence, the temperature at which it boils is a measure of its physical property