Chemistry

By daltonschwartz
  • Oct 2, 1000

    Democritus

    Democritus
    Matter is composed of empty space through which atoms move 480 B.C.
  • Oct 2, 1000

    Aristotle

    Aristotle
    Rejected the atomic theory 322 BC

  • Antoine Lavosier

    Compiled a list of 23 elements

  • John Dalton

    John Dalton
    All mater is composed of extremely small particles called atoms

  • Amedeo Avogadro

    Amedeo Avogadro
    Determined the volume of one mole of gas

  • George Stephenson

    Steam Engine

  • Samuel Morse

    Morse Code

  • George Crum

    George Crum
    Potato Chips

  • Henri Becquerel

    Discovered that phosphorescent uranium salts

  • Alfred Nobel

    Alfred Nobel
    Dynamite

  • William Crookes

    William Crookes
    Discovered cathode ray tube which made old televisions work

  • Karl Benz

    Karl Benz
    Automobile

  • John Froehlich

    John Froehlich
    Gas Powered Tractor

  • Carl Elsene

    Swiss Army Knife

  • J.J Thomson

    J.J Thomson
    Identified the first subatomic particle - the electron

  • Madam Curie

    Discovered Polonium

  • Max Planck

    Max Planck
    Matter can gain or lose energy only in small, specific amounts called quanta.

  • Ransom Olds

    Ransom Olds
    Assembley Line

  • Conrad Hubert

    Flashlight

  • Robert Millikin

    Determined the charge of an electron = 1-

  • Albert Einstein

    Proposed that electromagnetic radiation has both wavelike and particle like nature's (Photon)

  • Earnest Rutherford

    Founded the nucleus

  • Niels Bohr

    Related the hydrogen atom’s energy states to the motion of electron within the atom

  • Werner HeisenbergThe Heisenberg uncertainty principle states that it is fundamentally impossible to know precisely both the velocity and position of a particle at the same time. (1933)

    The Heisenberg uncertainty principle states that it is fundamentally impossible to know precisely both the velocity and position of a particle at the same time.

  • Louis deBrogile

    Saw that only whole numbers of wavelengths are allowed in a circular orbit of fixed radius

  • Erwin Schrodinger

    Created an atomic model in which electrons are treated as waves called the wave mechanical model of the atom or the quantum mechanical model of the atom

  • James Chadwick

    Found that the nucleus also contained a neutral particle called the Neutron.

  • Alexander Graham Bell

    Telephone

  • Henry Moseley

    Discovered that atoms of each element contain a unique positive charge in their nuclei.