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Phlogiston ( altgriechisch φλόγιστον, von φλογιστός phlogistós, deutsch ‚verbrannt‘) war eine von Georg Ernst Stahl (1659–1734) eingeführte hypothetische Substanz, von der man im späten 17. und im 18. Jahrhundert vermutete, dass sie allen brennbaren Körpern bei der Verbrennung entweicht sowie bei ...
Phlogiston theory states that phlogisticated substances contain phlogiston and that they dephlogisticate when burned, releasing stored phlogiston, which is absorbed by the air. Growing plants then absorb this phlogiston, which is why air does not spontaneously combust and also why plant matter burns. This method of accounting for ...
The phlogiston theory once put forward the belief that there was a fire-like element called phlogiston inside combustible bodies which was released during combustion. When the substances burned, the phlogiston escaped leaving a solid ash called calx. This theory explained why the mass after burning fuels was less than the original mass.
6. Dez. 2023 · Phlogiston Theory is an obsolete scientific theory from the late 17th and early 18th centuries, proposing that a fire-like element, phlogiston, is released during combustion. The theory is important because it represented a crucial step in the development of chemical science, providing an early framework for understanding combustion ...
Phlogistontheorie, erste wissenschaftliche Theorie, die versuchte, alle heute als Oxidation bezeichneten Vorgänge einheitlich zu deuten. Sie wurde 1667 von J.J. Becher begründet und von G.E. Stahl systematisch fortgeführt. Demnach enthalten alle brennbaren Körper das ›Phlogiston‹, durch das sie brennbar werden und das bei der Verbrennung entweicht.
phlogiston, in early chemical theory, hypothetical principle of fire, of which every combustible substance was in part composed. In this view, the phenomena of burning, now called oxidation, was caused by the liberation of phlogiston, with the dephlogisticated substance left as an ash or residue.
Johann Joachim Becher (German:; 6 May 1635 – October 1682) was a German physician, alchemist, precursor of chemistry, scholar, polymath and adventurer, best known for his development of the phlogiston theory of combustion, and his advancement of Austrian cameralism.
