Final answer:
A physical property is a characteristic of matter that can be observed or measured without changing the chemical composition of the substance. An example of a physical property is density.
Step-by-step explanation:
A physical property is a characteristic of matter that can be observed or measured without changing the chemical composition of the substance. An example of a physical property is density. Density is the mass of a substance per unit volume. Other examples of physical properties include color, strength, stiffness, and setting reaction.