Final answer:
The inability to rust is a chemical property, while the state of matter is a physical property. Both are characteristics that define a substance's inherent qualities, its reactions, and form.
Step-by-step explanation:
The lack of ability to rust is classified as a chemical property because it relates to a substance's ability to undergo a specific chemical change. Rusting is the result of a chemical reaction between iron and oxygen, resulting in iron oxide. If a material cannot rust, it is exhibiting a chemical property related to its inability to partake in this reaction.
The state of matter, whether solid, liquid, gas, or plasma, is considered a physical property. It describes a measure of the substance that does not involve changing its chemical identity but only its physical form, which can be observed or measured without any change to its composition.