By tapping into the unknown world of gases, Priestly challenged and dethroned the idea that “air is a simple elementary substance, indestructible and unalterable”, a concept that had “dominated science for 23 uninterrupted centuries” (Joseph Priestley and the Discovery of Oxygen). Priestley discovered 10 new gases: nitri
Priestley discovered 10 new gases: nitric oxide (nitrous air), nitrogen dioxide (red nitrous vapour), nitrous oxide (inflammable nitrous air, later called “laughing gas”), hydrogen chloride (marine acid air), ammonia (alkaline air), sulfur dioxide (vitriolic acid air), silicon tetrafluoride (fluor acid air), nitrogen (phlogisticated air), oxygen (dephlogisticated air, independently codiscovered by Carl Wilhelm Scheele), and a gas later identified as carbon