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The Pholgiston theory explains that when substances (feul) burn, people belived that pholgiston (oxygen) is produced leaving behind the Clax (ash)
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∙ 15y ago
Wiki User
∙ 13y agoIt was believed that Phlogiston was the stuff that made up the flames when something burned.
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Is phlogiston considered a scientific knowledge?
No. Phlogiston was a theory considered to be fact and actually hindered scientific knowledge until it was discredited. The theory was used to explain certain observations about flame, oxidation, and the formation of certain compounds, most noticeably cinnabar. As with some theories, phlogiston used variable factors to explain anomalies. For instance it was assumed to have negative weight under certain circumstances. Once oxidation was properly understood phlogiston theory was no longer considered true.
What is the phlogiston?
The alchemist and physician J. J. Becher proposed the phlogiston theoryThe phlogiston theory (from the Ancient Greek φλογιστόν phlogistón "burning up", from φλόξ phlóx "flame"), first stated in 1667 by Johann Joachim Becher, is an obsolete scientific theory that postulated the existence of a fire-like element called "phlogiston", which was contained within combustible bodies and released during combustion. The theory was an attempt to explain processes of burning such as combustion and the rusting of metals, which are now collectively known as oxidation.
Stahl and Becher major contributions to the field of chemistry?
They proposed the Phlogiston Theory.
Why was the pholgiston theory thought to be incorrect?
The theory holds that all flammable materials contain phlogiston, a substance without color, odor, taste, or mass that is liberated in burning. Once burned, the "dephlogisticated" substance was held to be in its "true" form, the calx."Phlogisticated" substances are those that contain phlogiston and are "dephlogisticated" when burned; "in general, substances that burned in air were said to be rich in phlogiston; the fact that combustion soon ceased in an enclosed space was taken as clear-cut evidence that air had the capacity to absorb only a definite amount of phlogiston. When air had become completely phlogisticated it would no longer serve to support combustion of any material, nor would a metal heated in it yield a calx; nor could phlogisticated air support life, for the role of air in respiration was to remove the phlogiston from the body."[4] Thus, phlogiston as first conceived was a sort of anti-oxygen.Joseph Black's student Daniel Rutherford discovered nitrogen in 1772 and the pair used the theory to explain his results. The residue of air left after burning, in fact a mixture of nitrogen and carbon dioxide, was sometimes referred to as "phlogisticated air", having taken up all of the phlogiston. Conversely, when oxygen was first discovered it was thought to be "dephlogisticated air", capable of combining with more phlogiston and thus supporting combustion for longer than ordinary air.[5]j.mastanrao.chemistry mentorandhra pradeshindiae mail: jmrao2006@gmail.com
What to be accurate a theory must continue to explain?
To be accurate, a theory must continue to explain what
Who rejected phlogiston theory?
Lavoiser rejected the phlogiston theory!
Is phlogiston considered a scientific knowledge?
No. Phlogiston was a theory considered to be fact and actually hindered scientific knowledge until it was discredited. The theory was used to explain certain observations about flame, oxidation, and the formation of certain compounds, most noticeably cinnabar. As with some theories, phlogiston used variable factors to explain anomalies. For instance it was assumed to have negative weight under certain circumstances. Once oxidation was properly understood phlogiston theory was no longer considered true.
When iron rusts is it a phlogiston theory or a oxygen theory?
It is a process that involves oxygen. The phlogiston theory has been disprooven for a long time.
Was the phlogiston theory of burning correct?
No, it was not. The phenomena explained by the theory are now known to be a result of oxidation, and phlogiston does not exist.
Who propose the phlogiston theory?
The phlogiston theory was first proposed by Johann Joachim Becher in 1667. This theory is now considered obsolete and was replaced by the oxygen theory.
How did Antoine lavoisier disprove the phlogiston theory?
There was no evidence until at least 2 yrs into the work of the phlogiston theory
What is the phlogiston?
The alchemist and physician J. J. Becher proposed the phlogiston theoryThe phlogiston theory (from the Ancient Greek φλογιστόν phlogistón "burning up", from φλόξ phlóx "flame"), first stated in 1667 by Johann Joachim Becher, is an obsolete scientific theory that postulated the existence of a fire-like element called "phlogiston", which was contained within combustible bodies and released during combustion. The theory was an attempt to explain processes of burning such as combustion and the rusting of metals, which are now collectively known as oxidation.
What are the good points of the phlogiston theory?
a combustible material is made up of 2 parts: the calx and phlogiston when a substance burnt the phlogiston into air and calx(ash) left behind so there are no good points of this theory
Is Phlogiston considered not to be scientific knowledge?
Phlogiston was an early scientific attempt to explain what is now referred to as the generation and flow of heat. It was believed to be a fluid that existed inside objects and could flow through them (even if they were solids)). It was replaced by the theory of thermodynamics.
Why did the phlogiston theory change peoples ideas about burning?
because it changed their mind to belive that phlogiston is in flammable things.
What does the phlogiston theory ignore?
The phlogiston theory was not able to give satisfactory explanations of diverse energy conversions that involved heat energy. For example, through friction you can generate an almost unlimited amount of heat energy from a device.
Recognized as the father of modern chemistry and discovered phlogiston?
Lavoisier is consider the first modern important chemist. The phlogiston theory was created in 1667 by Johann Joachim Becher. This theory is false.
