History of atom timeline by Garrett B and Christian Reine

By christian reine
  • 100

    Democritus 400(BC)

    Democritus 400(BC)
    in the year 400 BC democritus said that there must be a point where you cannot cut in halfs/parts anymore.He got this from experements because he felt that salt tasted sharp so he thought salt has sharp atoms..He believed that the atom was the smallest particle of matter ."GaggleTube Video - Models of the Atom Timeline." GaggleTube Video - Models of the Atom Timeline. N.p., n.d. Web. 19 Feb. 2015.

  • Dalton

    Dalton
    he said that matter consists of invisible atoms. Atoms are arranged in different combinations to make different compounds. The mthod he used to make this discovery was experements that shown that matter is amde of tiny particles. John Dalton imagined them as tiny little balls that arranged in different combinations to make different things. "GaggleTube Video - Models of the Atom Timeline." GaggleTube Video - Models of the Atom Timeline. N.p., n.d. Web. 19 Feb. 2015.

  • Thomson

    Thomson
    He discovered that electrons are much much smaller than atoms. He used observations with food and the postiive and negative charge makes nuetal electrons. This is also called the plum pudding method, just like small electrons stuck throughout all postivie charges is in the center. "GaggleTube Video - Models of the Atom Timeline." GaggleTube Video - Models of the Atom Timeline. N.p., n.d. Web. 19 Feb. 2015.

  • Rutherford

    Rutherford
    Before his experements he noticed that all radioactive elements give off positive and negative charges..Rtherfords find was strange . He used experements. The atom consisted od subatomic particles called protons and electrons. Also called the gold foil method , and called the Rutherford model. "GaggleTube Video - Models of the Atom Timeline." GaggleTube Video - Models of the Atom Timeline. N.p., n.d. Web. 19 Feb. 2015.

  • Bohr

    Bohr
    He believed that the electrons would spin around. Orbits around the nucleus . In circukar orbit. He used theries from observations that the nucleus spun around the nucleas. In his atom the nucleus were like planets spinning around the nueleas in circular orbit. ggleTube Video - Models of the Atom Timeline." GaggleTube Video - Models of the Atom Timeline. N.p., n.d. Web. 19 Feb. 2015.

  • scrodenger and Hisenburg

    scrodenger and Hisenburg
    They showed the electrons were like flies that were going around the atom really fast. He used the exidence from the experements. They thoughr the atoms orbited around the nueclus called orbital. "GaggleTube Video - Models of the Atom Timeline." GaggleTube Video - Models of the Atom Timeline. N.p., n.d. Web. 19 Feb. 2015.