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history of chemistry by colin kern

  • Jan 1, 1000


    proposed the idea that matter was not infinitely divisible. He believed matter was made up of tiny individual particles called atomos. Democritus believed that atoms could not be created, destroyed, or further divided
    460 BC
  • Jan 1, 1000


    declares existence of 4 elements air, fire, water, earth and two alternatives hot & cold, and dry & moist
    638 BC
  • Jan 1, 1215

    magna carta

    magna carta
    The Magna Carta is a document that King John of England was forced into signing. The purpose of the Magna Carta was to curb the King and make him govern by the old English laws that had prevailed before the Normans came. he Magna Carta demonstrated that the power of the king could be limited by a written grant.
  • Jan 1, 1450

    printing press

    printing press
    invented by Johannes Guttenberg and it made printing books, newspapers, etc faster to make and cheaper for the citizens
  • shakespeare dies

    shakespeare dies
    one of the best writer of all time dies and leaeves behind 38 plays, 154 sonnets, two long narrative poems, and several other poems
  • The American Revolution

    The American Revolution
    battle between britian and the US for freedom from britian
  • Antoine Lavoisier

    Antoine Lavoisier
    mass conserved through course of chemical reaction
  • Joseph Proust

    Joseph Proust
    Law of Definite Proportions
  • Louisiana purchase

    Louisiana purchase
    the US bought the Louisiana purchase from France and it nearly doubled the size of the US
  • John Dalton

    John Dalton
    daltons atomic theory
  • Amedeo Avogadro

    Amedeo Avogadro
    Avogadro's law, states that equal volumes of gases, at the same temperature and pressure, contain the same number of molecules
  • War of 1812

    War of 1812
    war between the US and Great Britian over the impressment of US sailors into the British Navy
  • California Gold Rush

    California Gold Rush
    Gold was found in California and many people rushed to California to try and get rich off of gold
  • William Crookes

    William Crookes
    theory of radiant matter, cathode rays
  • Henri Becquerel

    Henri Becquerel
    helped discover radiation
  • J.J. Thomson

    J.J. Thomson
    determine the charge-to-mass ratio of the charged particle, discovery of the electron and of isotopes
  • Max Planck

    Max Planck
    thermodynamics, E=hv, black body radiation equation, matter can gain or lose energy only in small, specific amounts called quanta. That is, a quantum is the minimum amount of energy that can be gained or lost by an atom
  • Albert Einstein

    Albert Einstein
    theory of special relativity, the photoelectric effect, Brownian motion
  • Robert Millikan

    Robert Millikan
    discovered charge of electron
  • Ernest Rutherford

    Ernest Rutherford
    studied alpha particles
  • Madame Curie

    Madame Curie
    researched radium, discovered radium and polonium, helped discover radiation
  • Henry Moseley

    Henry Moseley
    discovered that atoms of each element contain a unique positive charge in their nuclei
  • world war one

    world war one
    archduke Francis Ferdinand was assassinated and the nations went to war to avenge his death including German, Austria-Hungary, Ottoman Empire, Bulgaria, Serbia, Russia, France, Britain, Belgium, Romania, US, and Italy
  • Niels Bohr

    Niels Bohr
    made the Bohr model an atom, the theory that electrons travel in discrete orbits around the atom's nucleus.
  • Louis deBroglie

    Louis deBroglie
    researched quantum theory, discovered wave nature of electrons
  • Werner Heisenberg

    Werner Heisenberg
    the uncertainty principle and theory of quantum mechanics
  • Erwin Schrodinger

    Erwin Schrodinger
    quantum mechanical model of the atom, The Schrödinger equation, and Schrödinger's cat
  • James Chadwick

    James Chadwick
    discovered the neutron
  • atomic bomb

    atomic bomb
    bomb dropped on Hiroshima and Nagasaki Japan which made them surrender from WW2
  • Period: to

    chemistry colin kern

  • terrorist attacks

    terrorist attacks
    al-Qaeda hijacked four passenger jets. The hijackers intentionally crashed two planes into the Twin Towers of the World Trade Center in New York City; both towers collapsed within two hours. Hijackers crashed American Airlines Flight 77 into the Pentagon in Arlington, Virginia. The fourth jet, United Airlines Flight 93, crashed into a field near Shanksville, Pennsylvania, after passengers attempted to take control before it could reach