All combustion reactions (such as the burning of coal) are exothermic. Incredibly, the reaction between iron and moist air that produces rust is a very exothermic process and generates lots of heat.

Luckily, a spot of rust is not a death sentence for your metal gear. Rust removers use a simple chemical reaction to break down rust, separating it from the surface of metal so you can wipe it away.

The first contains a fine iron powder, salt, and water in a pouch that is permeable to air. When it is exposed to air, the iron begins to rust. This rusting process produces heat. The second contains ...

Corrosion close corrosionThe destruction of a metal by oxidation or chemical action, eg rusting. happens when a metal continues to oxidise. The metal becomes weaker over time, and eventually all ...

Add this trick to your arsenal of natural cleaning methods. Find out why it works and how to do it successfully. While there ...