Historical development of the atom :: essays research papers fc

The imagination of the blood cell all stared round 450 BC when a Greek disciple starting think when crumb some(prenominal)thing break on much, when are the pieces at their smallest, this mans name was Leucippus. Leucippus also had pupil who also prospect the same modality as Leucippus, his name was Democritus. They developed there ideas and when Democritus died his supposition summed up before long was that everything in the world was made of tiny pieced that could not be blue up any more. That how the word atom was derived from the Greek work atomos content unbreakable. This was the start of the system of atoms. The first time this theory was taught at a school was by Epicurus 306 BC which he established himself.The theory laid dormant for about 2 millenniums this was basically because it was all alone forgotten, this was because it had no evidence, and it was only logic. One of the first people to show some evidence was Robert Boyle, an English chemist. In 1662 he c onducted Boyles experiment and smashed air in a J tube with mercury, this opened up a whole new window.This lead to new and old thought about different types of atoms, elements. The Greeks thought simular to this but only divided it up into four groups. Their theory was close to Boyles but Boyle had a more concise idea of these elements and by the end of the 1700s they had discovered about 30 elements.In 1972 Frenchman Antoine Laurent Lavoisier discover the no mater what happens a cognitive content always has the same weight. In the late 1700s another Frenchman, Proust, discovert that elements can be combined to make different compounds, and that certain proportions had to be used. This became sleep together as law of definite proportions.A few years later(prenominal) an English chemist, whoremaster Dalton, a fan of Boyle worked on Prousts theory and came up with the law of multiple proportions. Dalton soon came up with weight theories of the atom a discovered that hydrogen was the lightest.In 1813 Jons Jakob Berzelius created a system employ the Latin words for the element to represent that element.In 1860 the chemist of atomic number 63 had their first international Chemical Congress to discuss the matter. They theory that prevailed was Cannizzaro theory. John Thomson was born in 1856, and is recognised as the British scientist who discovered and set the electron.