Periodic Table Timeline
 

Periodic Table Timeline

Periodic Table Timeline
The Chemistry and Elements Timeline
Famous people and dates of key discoveries and events
Dmitri Mendeleev and the Periodic Table
Properties and atomic weights
Atomic numbers of the elements and the 'Periodic Law'
History & Timelines Index
 
Timelines of Events
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The Periodic Table is an arrangement of the chemical elements arranged in order of atomic number, usually in rows, so that elements with similar atomic structure (and hence similar chemical properties) appear in vertical columns

    440 BC Democritus and Leucippus propose the idea of the atom, an indivisible particle that all matter is made of.  
         
    330 BC Aristotle proposes the four element theory: earth, air, fire & water  
         
    360 BC Plato coins term ‘elements’ (stoicheia)  
         
    1605 Sir Francis Bacon published "The Proficience and Advancement of Learning" which contained a description of what would later be known as the scientific method.  
         
    1661 Robert Boyle published "The Sceptical Chymist" which was a treatise on the distinction between chemistry and alchemy. It also contained some of the earliest ideas of atoms, molecules, and chemical reaction marking the beginning of the history of modern chemistry  
         
    1754 Joseph Black isolated carbon dioxide, which he called "fixed air".  
         
    1778 Antoine Lavoisier wrote the first extensive list of elements containing 33 elements & distinguished between metals and non-metals  
         
    1766 Henry Cavendish discovered hydrogen as a colorless, odourless gas that burns and can form an explosive mixture with air  
         
    1773–1774 Carl Wilhelm Scheele and Joseph Priestly independently isolated oxygen  
         
    1803 John Dalton proposed "Dalton's Law" describing the relationship between the components in a mixture of gases.  
         
    1828 Jakob Berzelius developed a table of atomic weights & introduced letters to symbolize elements  
         
    1828 Johann Dobereiner developed groups of 3 elements with similar properties  
         
    1864 John Newlands arranged the known elements in order of atomic weights & observed similarities between some elements  
         
    1864 Lothar Meyer develops an early version of the periodic table, with 28 elements organized by valence  
         
    1864 Dmitri Mendeleev produced a table based on atomic weights but arranged 'periodically' with elements with similar properties under each other. His Periodic Table included the 66 known elements organized by atomic weights.  
         
    1894 William Ramsay discovered the Noble Gases.  
         
    1898 Marie and Pierre Curie isolated radium and polonium from pitchblende.  
         
    1900 Ernest Rutherford discovered the source of radioactivity as decaying atoms  
         
    1913 Henry Moseley determined the atomic number of each of the elements and modified the 'Periodic Law'.  
         
    1940 Edwin McMillan and Philip H. Abelson identify neptunium, the lightest and first synthesized transuranium element, found in the products of uranium fission.  
         
    1940 Glenn Seaborg synthesised transuranic elements (the elements after uranium in the periodic table)  
         
Periodic Table Timeline

Periodic Table Timeline
History Timelines of Events provide fast facts and information about famous events in history and chemistry, such as those detailed in the Periodic Table Timeline. This major chemistry event is arranged in the Periodic Table timeline by chronological, or date order, providing an actual sequence of this past event which was of significance to history. Many historical events, such as detailed in the Periodic Table timeline, occurred during times of change. Many of the famous events as detailed in the Periodic Table timeline describe famous and major incidents. The specific period in history detailed in the Periodic Table timeline led to great changes in the development of World Civilisation. The Periodic Table timeline provides fast information via timelines which highlight the key dates and major historical significance in a fast information format. Specific information can be seen at a glance with concise and accurate details of this historical event of significance in modern chemistry. The Periodic Table timeline provides details of many important events of significant occurrence and outcome in the history of chemistry.

Periodic Table Timeline

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