Final answer:
A physical property is one that we can measure or observe without changing the substance's identity, like color, density and melting point, whereas a chemical property describes a substance's potential to undergo a chemical change, like reactivity with oxygen or flammability.
Step-by-step explanation:
The key difference between a physical property and a chemical property lies in their behavior and changes that a substance can undergo. A physical property is observed or measured without changing the substance's identity. Examples include color, density, and melting point. On the other hand, a chemical property describes the ability of a substance to undergo a specific chemical change. These changes usually occur when the substance reacts with another substance and includes properties like reactivity with oxygen or flammability.
Learn more about Physical and Chemical Properties