Oxide

Any element combined with oxygen. Common rust is iron oxide, one of the most widely used colorants ? making red bricks red for example. Silver&#39;s oxide is more often referred to as tarnish. Bronze&#39;s is more often referred to as a patina. Pure gold cannot oxidize. There are several ways to remove oxides from metals, and one is by pickling.Also see antimony and pigment.<br><br>Any element combined with oxygen. Common rust is iron oxide, one of the most widely used colorants ? making red bricks red for example. Silver&#39;s oxide is more often referred to as tarnish. Bronze&#39;s is more often referred to as a patina. Pure gold cannot oxidize. There are several ways to remove oxides from metals, and one is by pickling.Also see antimony and pigment.