What was lavoisier's contribution to the development of the modern atomic theory?

Answer 1

Antoine Lavoisier was the first early scientist to really pay close attention to the quantities involved in chemical reactions. He measured carefully and kept good records of his work, which helped later scientists build on what he discovered. His meticulous work helped John Dalton come up with his atomic theory some years later. Lavoisier was beheaded during the French Revolution.

Answer 2

Did esearch on oxygen, priving iron rust formed by oxygen from the air reqcted with the iron. Showed that air is a combination if oxygen and nitrogen, not a pure element. He repeated previous experiments with hydrogen gas, burning it to prove that hydrogen and oxugen combine (burn) to form water. Helped disprove the old phlogiston theory thus paving the way for a new theory -- Dalton's atomic theory.

He was a scientist during the time of the French Revolution and , I think, he was beheaded by the guillotine by those in charge of the FR.

Answer 3

He created the theory of matter stating that matter is not improved or denied.

The development of the atomic theory owes much to the work of two men: Antoine Lavoisier, who did not himself think of matter in terms of atoms but whose work laid organization groundwork for thinking about elements, and John Dalton, to whom the atomic theory is attributed. Much of Lavoisier's work as a chemist was devoted to the study of combustion. He became convinced that when a substance is burned in air, it combines with some component of the air. Eventually he realized that this component was the dephlogisticated air which had been discovered by Joseph Priestly (1733 to 1804) a few years earlier. Lavoisier renamed this substance oxygen. In an important series of experiments he showed that when Mercury is heated in oxygen at a moderatetemperature, a red substance, calx of mercury, is obtained. (A calx is the ash left when a substance burns in air.) At a higher temperature this calx decomposes into mercury and oxygen. Lavoisier's careful experiments also revealed that the combined masses of mercury and oxygen were exactly equal to the mass of calx of mercury. That is, there was no change in mass upon formation or decomposition of the calx. Lavoisier hypothesized that this should be true of all chemical changes, and further experiments showed that he was right. This principle is now called the law of conservation of mass.

As Lavoisier continued his experiments with oxygen, he noticed something else. Although oxygen combined with many other substances, it never behaved as though it were itself a combination of other substances. Lavoisier was able to decompose the red calx into mercury and oxygen, but he could find no way to break down oxygen into two or more new substances. Because of this he suggested that oxygen must be anelement-an ultimately simple substance which could not be decomposed by chemical changes.

Lavoisier did not originate the idea that certain substances (elements) were fundamental and all others could be derived from them. This had first been proposed in Greece during the fifth century B.C. by Empedocles, who speculated that all matter consisted of combinations of earth, air, fire, and water. These ideas were further developed and taught by Aristotle and remained influential for 2000 years.

Lavoisier did, however, produce the first table of the elements which contained a large number of substances that modern chemists would agree should be classifies as elements. He published it with the knowledge that further research might succeed decomposing some of the substances listed, thus showing them not to be elements. One of his objectives was to prod his contemporaries into just that kind of research. Sure enough the "earth substances" listed at the bottom were eventually shown to be combinations of certain metals with oxygen. It is also interesting to note that not even Lavoisier could entirely escape from Aristotle's influence. The second element in his list is Aristotle's "fire," which Lavoisier called "caloric," and which we now call " heat." Both heat and light, the first two items in the table, are now regarded as forms of energyrather than of matter.

Although his table of elements was incomplete, and even incorrect in some instances, Lavoisier's work represented a major step forward. By classifying certain substances as elements, he stimulated much additional chemical research and brought order and structure to the subject where none had existed before. His contemporaries accepted his ideas very readily, and he became known as the father of chemistry.

Answer 4

Antoine Lavoiser created the first version of the law of c

Answer 5

Antoine Lavoisier was a French nobleman and chemist. His contribution to the development of the modern atomic theory was his idea of the possibility of an Atomic Mass.

Answer 6

nag kantutan sila ng kanyang asawa at bata ang nabuo un ang contribution nya ang tamod.

Answer 7

he contributed to the atomic theory