Anaerobic oxidation of methane (AOM) by sulfate has been recognized as a critical process to maintain this greenhouse gas stability by limiting methane flux to the atmosphere. We show geochemical ...

Reduction is the gain of electrons by a substance. It is also the loss of oxygen from a substance. For example, copper(II) oxide can be reduced to form copper when it reacts with hydrogen: ...

Iron oxide, aluminum, and a catalyst are placed in a flowerpot. The reaction is extremely exothermic resulting in molten iron and aluminum dripping into sand below the flowerpot. The demonstration ...

When you burn the iron it reacts with oxygen to make iron oxide, creating the sparks we see. When a sparkler has finished burning, you’ll notice that the iron pieces on the rod have changed colour.

Oxygen then reacted with the soluble iron to form insoluble iron oxide. Iron oxides fell to the ocean floors as minerals such ...