History of the Periodic Table :: essays research papers

Things are very different from each other, and can be broken down into small groups inside itself, which was accordingly noticed early by people, and Greek thinkers, about 400BC. Which just happened to use words like "element, and atom to describe the many different separate and even the smallest parts of matter. These ideas were around for over 2000 years while ideas such as Elements of Earth, Fire, Air, and Water to explain world stuff came and went. Much later on, Boyle, an experimenter like Galileo and Bacon, was influenced very much by Democritus, Gassendi, and Descartes, which lent much important weight to the atomic theory of matter in the 1600s. Although it was Lavoisier who had divided the very few elements known in the 1700s into four different classes, and then tail Dalton made atoms even more believable, telling everyone that the mass of an atom was its most important property. Then in the early 1800s Dobereiner noted that the similar elements often had carnal k nowledge atomic masses, and DeChancourtois made a cylindrical get across of elements to display the periodic reoccurrence of properties. Cannizaro then determined atomic weights for the 60 or so elements known in the 1860s, and then a table was arranged by Newlands, with the many elements given a serial number in order of their atomic weights, of course start with Hydrogen. That made it clear that "the eighth element, starting from a given one, is a kind of a repeat of the first", which Newlands called the Law of Octaves.      Then both Meyer and Mendeleyev reinforced periodic tables alone, Meyer more impressed by the periodicity of physical properties, while Mendeleyev was more interested in the chemical properties. Then Mendeleyev had published his periodic table and his law in 1869 and forecasted the properties of the missing elements, and chemists then began to be grateful for it when the discovery of elements was predicted by the table that had tak en place. Although, periodic tables have al personal manners been related to the way scientists thought about the shape and structure of the atom, and has changed over the years exactly for that reason.           The modern periodic table is very much like a later table by Meyer, but arranged, by Mendeleevs, but it had to be according to the size of the atomic weight. The only thing though that was made by Mendeleevs was Group 0, which was then added by Ramsay.