Development of Periodic Table

Timeline created by Chenoaa
  • Henning Brand

    He was the first person to discover an element. This element is called Phosphorus and it is found in urine.
  • Henry Cavendish

    He discovered hydrogen. He discribed it as a colourless, odourless gas that burns and can form an explosive mixture with air.
  • Antoine Lavoisier

    He made the first list of elements. The table had 33 different elements and showed the difference between metals and non-metals.
  • John Dalton

    John made what is called "Dalton's Law". this describes the relationship between the different components in a mixture of different gases. That discovery helped future scientists isolate a mixture of gases for individual study
  • John Newland

    John Newland
    He realised if the elements were put into order by atomic weight you find a similarity to every eighth element.
  • Lothar Meyer

    He made a periodic table with 28 elements and based it on properties such as molar volume.
  • Dmitri Mendeleev

    he made a periodic table with 66 elements based on atomic weights but it was arranged 'periodically'. The elements with similar properties went under each other and he left gaps for the yet to be discovered elements.
  • William Ramsay

    William discovered what is called 'Noble gases'. later one he then discovered they make a new group on the periodic table.
  • J.J. Thomson

    He discovered electrons by doing a series of experiments to study the nature of how much electric discharge in a high-vacuum cathode-ray tube.
  • Henry Moseley

    Rearanged the elements on the periodic table by atomic number.
  • Henry Moseley

    Henry noticed there were 3 unknown elements between aluminium and gold.