Is the tarnishing of silver in the presence of sulfur a physical or chemical change?

The tarnishing of silver in the presence of sulfur is a chemical change. This process occurs when silver reacts with sulfur compounds in the air, forming silver sulfide, which appears as a dark discoloration on the surface of the silver. Unlike physical changes, chemical changes result in the formation of new substances, and in this case, the original silver cannot be restored to its pure form without undergoing a chemical reaction to remove the tarnish.