Noun
Swedish chemist (born in Germany) who discovered oxygen before Priestley did (1742-1786)
Source: WordNetA friendship developed between Scheele and Bergman after Scheele analyzed a reaction which Bergman and his assistant Johan Gottlieb Gahn could not resolve. Source: Internet
Bergman informed Scheele that the saltpeter he had purchased from Scheele's employer, after long heating, produced red vapors (now known to be nitrogen dioxide) when it came into contact with acetic acid. Source: Internet
Gernsheim, pg. 7 The Swedish chemist Carl Wilhelm Scheele showed in 1777 that silver chloride was especially susceptible to darkening from light exposure, and that once darkened, it becomes insoluble in an ammonia solution. Source: Internet
Existing theories before Scheele By the time he was a teenager, Scheele had learned the dominant theory of gases which in the 1770s was the phlogiston theory. Source: Internet
Based upon this friendship and respect Scheele was given free use of Bergman's laboratory. Source: Internet
Before Scheele made his discovery of oxygen, he studied air. Source: Internet