its freshly exposed shiny surface rapidly turns dull as a thin layer of sodium oxide forms: Other metals may oxidise more slowly. Gold and other very unreactive metals do not oxidise in air at all.

Growing Demand for Detergents: Sodium silicate is a key ingredient in detergents, contributing to their cleaning and emulsifying properties. The rising demand for household and industrial detergents ...

The shiny grey magnesium strip changes to a white powder called magnesium oxide. Learn more about making a reactivity series in this guide. For example, sodium is burned to make sodium oxide.