Old Chemists

Timeline created by matthall765
  • 460

    Democritus

    Democritus
    Born in 460 BC
    He is the father of moden science. He is credidted with coming wp with the theory that everything is made of atmos. Source
  • Jan 1, 1100

    Medevil Alchemy

    Medevil Alchemy
    Alchemy was revived in the 12th century. The goal was to discover how cosmos can improve mankind. An important substance was the philosiphor's stone. It was believed it can give you imortality and could transform common items to gold. later on it was used in medicine. Source
  • John Dalton Atomic Theory

    John Dalton Atomic Theory
    John Dalton came up with the atomic theory. The main points were Source
  • J.J Thompson

    J.J Thompson
    Thompson was the first to find there was a unit over 1000 times smaller than an atom. he called them corpuscles. But other scientists prefered the name electrons. Source
  • Henri Becquerel

    Henri Becquerel
    He accidently discovered radioactivity when he wrapped a fluoresent substance on a photographic plate but he found the plates were already exposed. this lead to the discovery of spontanous nuclear radiation. Source
  • Marie Curie

    Marie Curie
    She discovered Polonium and Radium and was the first female to be a professor. Source
  • Pierre Curie

    Pierre Curie
    Discovered polonium and radium with Marie Curie Source
  • Ernest Rutherford

    Ernest Rutherford
    During research into radioactivity, he coined the word alpha and beta to describe 2 types of radiation emition. Source
  • Neils Bohr

    Neils Bohr
    He created the bohr model. This was used to represent the basic structure of an atom. Source
  • James Chadwick

    James Chadwick
    He discoverd the neutron of the atomic. This uas crutial in the fission of uranium 235. The don't need to overcome the coulomb barrier, so the heaviest element can be split. This made it possible to create elements heavier than uranium. Source