Source: wikibot/phlogiston-theory
= Phlogiston theory
{wiki=Phlogiston_theory}
Phlogiston theory is a historical scientific theory that was proposed in the 17th century to explain combustion and rusting. According to this theory, all combustible materials contain a substance called phlogiston, which is released during burning. The theory suggested that when a material burns, it loses phlogiston and turns into a new substance, typically ash or gas, while the remaining material becomes less weighty.