-
440 BC
In 440 BC the idea came up of creating the first ever atom -
330 BC
The four element theory Earth, Air, Fire & Water was proposed -
1605
Francis Bacon published a book that showed a description of what would later be known as the scientific method. -
1661
Robert Boyle published a book that showed the distinction between chemistry and alchemy. -
1754
Joseph Black isolated carbon dioxide, which he called "fixed air". -
1778
Antoine Lavoisier came up with the firse list of elements containing 33 elements, metals and non metals. -
1780
Henry Cavendish discovered hydrogen, odourless gas that burns and can form an explosive mixture with air. -
1803
"Dalton's Law" was introduced by John Dalton describing the relationship between the components in a mixture of gases. -
1828
In 1828 a table of atomic weights & introduced letters to symbolize elements was devaloped -
1864
John Newlands arranged the elements in order of atomic weights -
1894
William Ramsay discovered the Noble Gases.