Final answer:
A physical property is a characteristic that can be observed or measured without changing the composition of the substance. The melting point is an example of a physical property.
Step-by-step explanation:
A physical property is a characteristic that can be observed or measured without changing the composition of the substance. One example of a physical property is melting point. The melting point is the temperature at which a solid substance changes to a liquid state. It can be determined by heating the substance and observing the temperature at which it starts to melt.