Regular steel rusts when iron chemically reacts with oxygen to form iron oxide. Although rust generally isn't harmful to humans, it can drastically corrode iron and make it unsafe and ugly.

In a new paper, Jordan Jensen and Alexis Ault introduce a new forensic tool designed to enhance our understanding of how unconformities form. Iron oxide minerals are found in rocks around the world.

Rust forms on iron, or iron alloy surfaces due to the reaction between iron, oxygen, and water. During this reaction, the ...

When sodium is cut or scratched, 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 ...