Is red color a physical or chemical property

Its a physical property because it still has the same mass and shape and its makeup is the same

A physical property is something you can observe without changing the object's state. A chemical property is something that changes the object. Red color would be a physical property because you can observe that without changing its substance. For example, "The ice is cold," would be a physical property because when water freezes it changes state, but not the substance itself. "The fire is burning," is a chemical property because the object changes. Did that help?

Iron reacts with oxygen in a chemical hand-warmer. how should this reaction be categorized? the correct answer is: a). as an exothermic process because it releases heat