The phenomenon of silver transforming to a darker hue is a chemical reaction. Specifically, it describes the surface discoloration of silver objects, resulting in a darkening appearance. For example, silverware left exposed to air over time may exhibit this darkening on its surface.
Understanding this process is important for preservation and maintenance. This characteristic change has been observed throughout history, influencing methods of cleaning and protecting silver artifacts. Preventing or reversing this alteration helps retain both the aesthetic and monetary value of silver items.