This is a chemical property.
is a Reacts with air a chemica or physical property
Combustibility is a chemical property.
Chemical property
It is a chemical process - an oxidation.
It is a chemical property.
chemical
PHYSICAL
Rusting is a chemical change because the metal is reacting with air and changing into a new substance.
Air is a noun and not and adjective, hence it can not be a property. Gas would be a physical property describing air. Inert (for example) would be a chemical property.
Chemical property
Physical Property.
It is a chemical change but it can be reversed since that cahnge is only on the surface. It is merely an oxidization that occurs when silver is exposed to oxygen and has no contact with oil (which blocks the pores of the metal from reacting with oxygen).