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Atomic Theory

  • Democritus was born
    460 BCE

    Democritus was born

    He lived in abdera
  • Democritus’ Discovery (unknown date)
    400 BCE

    Democritus’ Discovery (unknown date)

    Democritus discovered that all matter consisted of tiny, invisible particles. How- he pounded materials until he made them into smaller parts and then made his conclusion Theory - atoms are always moving, they’re made of a single material, and formed by materials joining together
  • Democritus died
    370 BCE

    Democritus died

    R.I.P
  • Antoine Lavoisier was born

    Antoine Lavoisier was born

    He was born and lived in Paris, France for most of his life and (fact) he was known as “The Father of Modern Chemistry”. He was also born into a wealthy family
  • John Dalton was born

    John Dalton was born

    He lived in the United Kingdom and (fact) he was colorblind but it was never confirmed until 1995
  • Antoine Lavoisier’s Discovery

    Antoine Lavoisier’s Discovery

    He discovered that atoms are neither created nor destroyed. How? Well he studied chemical reactions and experimented some on his own.
  • Antoine Lavoisier discovered Oxygen

    Antoine Lavoisier discovered Oxygen

  • Antoine Lavoisier discovered Hydrogen

    Antoine Lavoisier discovered Hydrogen

  • Antoine Lavoisier died

    Antoine Lavoisier died

  • John Dalton’s Discovery

    John Dalton’s Discovery

    Matter is made up of atoms that are invisible and indestructible. He also created the first chart of atomic weight. How? He experimented with glasses which led him to his conclusion.
  • John Dalton died

    John Dalton died

  • J.J Thomson was born

    J.J Thomson was born

    He lived in the United Kingdom and (fact) married one of his students
  • Max Planck was born

    Max Planck was born

    He lived in Germany and (fact) was a great musician
  • James Chadwick was born

    James Chadwick was born

    He lived in the United Kingdom and (fact) was a prisoner during World War I
  • Marie Curie was born

    Marie Curie was born

    She lived in Poland and (fact) both her parents were teachers.
  • Robert Millikan was born

    Robert Millikan was born

    He lived in the United States.
  • Ernest Rutherford was born

    Ernest Rutherford was born

    He lived in the United Kingdom (fact) but he was born in New Zealand.
  • Albert Einstein was born

    Albert Einstein was born

    He was born in Germany but lived in New Jersey the majority of his life.
  • Niels Bohr was born

    Niels Bohr was born

    He lived in Denmark and (fact) played soccer on the college soccer team.
  • Erwin Shrödinger was born

    Erwin Shrödinger was born

    He lived in Austria the majority of his life.
  • Louis De Broglie was born

    Louis De Broglie was born

    He was born and died in France.
  • JJ Thomson’s Discovery

    JJ Thomson’s Discovery

    He discovered the electron. How? He experimented with a cathode ray tube.
  • Marie Curie’s Discovered Radium and Polonium

    Marie Curie’s Discovered Radium and Polonium

    How? She isolated radioactive radium salts and discovered the existence of the two new elements.
  • Werner Heisenberg was born

    Werner Heisenberg was born

    He lived in Germany his whole life.
  • Albert Einstein’s Discovery

    Albert Einstein’s Discovery

    He discovered about atoms in a liquid. They’re much different than atoms in a solid. How? He used the mathematical brownion motion. He also created a formula, and foreshadowed creating the atomic bomb and power.
  • Robert Millikan’s Discovery

    Robert Millikan’s Discovery

    He discovered the charge of an electron. How? He preformed the oil drop experiment high helped quantify the charge.
  • Ernest Rutherford’s Discovery

    Ernest Rutherford’s Discovery

    He created the Rutherford model, which is a model of the atom proving thomsons model wrong. How? Atoms have small charged neutrons surrender by space and circled by electrons. With that information, he created the correct model.
  • Niels Bohr’s Discovery

    Niels Bohr’s Discovery

    He discovered the hydrogen atom. How? He used the quantum theory and a lot of experimenting.
  • Max Planck’s Discovery

    Max Planck’s Discovery

    He originated the quantum theory which helped understand atomic and subatomic process.
  • Louis De Broglie’s Discovery

    Louis De Broglie’s Discovery

    He discovered that electrons have a wave of nature. Or in other words the wave nature of electrons. How? He used the quantum theory.
  • Werner Heidenberg’s Discovery

    Werner Heidenberg’s Discovery

    Werner discovered the Theory of quantum mechanics, and the discovery of allotrope forms of hydrogen. How? He mainly researched and used the quantum theory.
  • Erwin Shrödinger’s Discovery

    Erwin Shrödinger’s Discovery

    He took the Bohr atom model one step further and cleaned up the model. By stating that electrons are constantly moving, they never stay in one spot or position. How? He used mathmateical quations and the quantum theory.
  • James Chadwick’s Discovery

    James Chadwick’s Discovery

    He discovered the neutron. How? He bombarded beryllium atoms with alpha particles. An unknown radiation was produced which became neutrons.
  • Marie Curie Died

    Marie Curie Died

  • Ernest Rutherford Died

    Ernest Rutherford Died

  • JJ Thomson died

    JJ Thomson died

  • Max Plack Died

    Max Plack Died

  • Robert Millikan Died

    Robert Millikan Died

  • Albert Einstein Died

    Albert Einstein Died

  • Neils Bohr Died

    Neils Bohr Died

  • James Chadwick Died

    James Chadwick Died

  • Werner Heisenberg Died

    Werner Heisenberg Died

  • Louis De Broglie Died

    Louis De Broglie Died