Final answer:
Option d, reactivity with oxygen, is not a physical property; it is a chemical property because it involves the ability of a substance to undergo chemical changes and form new substances.
Step-by-step explanation:
The question posed is asking to identify which of the given options is not a physical property of matter. Physical properties are characteristics of matter that can be observed or measured without changing the identity of the substance. These include properties such as color, odor, and state (solid, liquid, or gas). On the other hand, chemical properties involve the substance's ability to undergo chemical changes that result in the formation of new substances.
Among the options given:
- Color is a physical property.
- Odor is a physical property.
- State is a physical property.
- Reactivity with oxygen is a chemical property.
Therefore, the correct answer is d. reactivity with oxygen, as this involves a substance's ability to change and form new substances, such as when iron rusts in the presence of oxygen and water.