Development of the Atomic Model by Empress Ash https://padlet.com/nicoleashleytabiolo/ot6rzld6qrvy en-us 2017-02-15 18:36:40 UTC 2025-11-13 23:42:18 UTC hello@padlet.com Democritus jewel_fontanilla https://padlet.com/nicoleashleytabiolo/ot6rzld6qrvy/wish/154121569 ▪ 4 60BC - 370BC
  • Live to be 90 years old 
  • All matter consist of invisible particles called atoms
  • Idesturtble
  • Solid but invisible
  • Homogenous
  • Differ in size, shape, mass, position, & arrangement  
  • Solids - small, pointy atoms
  • Liquids - large, round atoms
  • Oils- very fine, small atoms easily slip past each other 
  • Mentor, Leucippus, originally came up with the atomic theory, but he adopted from him
]]> 2017-02-15 18:46:47 UTC https://padlet.com/nicoleashleytabiolo/ot6rzld6qrvy/wish/154121569 nicoleashleytabiolo https://padlet.com/nicoleashleytabiolo/ot6rzld6qrvy/wish/154122317 2017-02-15 18:48:46 UTC https://padlet.com/nicoleashleytabiolo/ot6rzld6qrvy/wish/154122317 Citations nicoleashleytabiolo https://padlet.com/nicoleashleytabiolo/ot6rzld6qrvy/wish/154122841
  • Rutherford's Planetary Model of the Atom. (n.d.). Retrieved February 15, 2017, from http://www.iun.edu/~cpanhd/C101webnotes/modern-atomic-theory/rutherford-model.html
  • Ernest Rutherford Biography. (n.d.). Retrieved February 15, 2017, from http://www.thefamouspeople.com/profiles/ernest-rutherford-140.php
  • Wyman, E. (2003-2017). Rutherford Model of the Atom: Definition & Diagram. Retrieved February 15, 2017, from http://study.com/academy/lesson/rutherford-model-of-the-atom-definition-diagram-quiz.html
  • Khan Academy. (2017). Dalton's atomic theory. Retrieved February 15, 2017, from https://www.khanacademy.org/science/chemistry/electronic-structure-of-atoms/history-of-atomic-structure/a/daltons-atomic-theory-version-2
  • Biography.com Editors. (2015, September 14). John Dalton Biography. Retrieved February 16, 2017, from http://www.biography.com/people/john-dalton-9265201#death-and-legacy
  • The Nobel Prize in Physics 1933. (n.d.). Erwin Schrödinger - Biographical. Retrieved February 17, 2017, from http://www.nobelprize.org/nobel_prizes/physics/laureates/1933/schrodinger-bio.html
  • (n.d.). Retrieved February 17, 2017, from http://abyss.uoregon.edu/~js/21st_century_science/lectures/lec14.html
  • The Nobel Prize in Physics 1935. (n.d.). James Chadwick - Biographical. Retrieved February 17, 2017, from http://www.nobelprize.org/nobel_prizes/physics/laureates/1935/chadwick-bio.html
  • Chadwick Atomic Theory. (n.d.). Retrieved February 17, 2017, from http://www.animationoptions.com/photobphi/chadwick-atomic-theory
  • Democritus
    https://the-history-of-the-atom.wikispaces.com/Democritus
    Democritus. (n.d.). Retrieved February 17, 2017, from https://the-history-of-the-atom.wikispaces.com/Democritus
  • Niels Bohr

    http://www.livescience.com/32016-niels-bohr-atomic-theory.html

    Palermo, E. (2013, May 14). Niels Bohr: Biography & Atomic Theory. Retrieved February 17, 2017, from http://www.livescience.com/32016-niels-bohr-atomic-theory.html
  • JJ Thomson
    http://www.abcte.org/files/previews/chemistry/s1_p5.html
    Development of the Atomic Theory. (n.d.). Retrieved February 17, 2017, from http://www.abcte.org/files/previews/chemistry/s1_p5.html
    • ]]>     2017-02-15 18:50:12 UTC https://padlet.com/nicoleashleytabiolo/ot6rzld6qrvy/wish/154122841     jewel_fontanilla https://padlet.com/nicoleashleytabiolo/ot6rzld6qrvy/wish/154123709 2017-02-15 18:52:48 UTC https://padlet.com/nicoleashleytabiolo/ot6rzld6qrvy/wish/154123709 Ernest Rutherford nicoleashleytabiolo https://padlet.com/nicoleashleytabiolo/ot6rzld6qrvy/wish/154128804
  • August 30, 1871-October 19, 1937
  • Physicist
  • Lived to be 66 years old
  • won 11 awards
    • Discovered...
    •  the Rutherford model
    He tested J.J. Thomson's prediction by inventing his "gold foil" experiment. He thought that if Thomson's prediction works, then the mass of the atom scattered around in the atom. He tested it and most of the high velocity alpha particles (helium nuclei) went right through, while some bounced off the foil. This happened because most of the mass in the atom was focused in the nucleus, which makes some alpha particles bounce back.
    • atomic nucleus
    • Rutherford Scattering
    • Rutherford backscattering spectrometry
    • Proton
    • alpha particle
    • Artificial disintegration
    ]]>     2017-02-15 19:05:18 UTC https://padlet.com/nicoleashleytabiolo/ot6rzld6qrvy/wish/154128804     Niels Bohr jewel_fontanilla https://padlet.com/nicoleashleytabiolo/ot6rzld6qrvy/wish/154129822
  • Nobel prize in physics in 1922
  • October 7, 1885 - November 18, 1962
  • Is a small, positively charged nucleus surrounded by orbiting electron
  • Electrons travel in separate orbits around the nucleus
  • Numbers of electrons in the outer orbit determines the properties of an element
  • Chemical element bohrium (Bh), No. 107 named after him
  • 1913 - proposed to do a model of the atom
  • Electrons could only have certain classical motions: electrons in atoms orbit the nucleus 
  • Bohr model was based upon Planck’s quantum theory of radiation
    • ]]>     2017-02-15 19:07:56 UTC https://padlet.com/nicoleashleytabiolo/ot6rzld6qrvy/wish/154129822     JJ Thomson jewel_fontanilla https://padlet.com/nicoleashleytabiolo/ot6rzld6qrvy/wish/154134524
  • Year of discovery 1897
  • December 18, 1856 - August 30, 1940
  • Experimenting with a Cookes, or cathode ray, tube
  • Studies positively charged particle in neon gas
  • Accepted that the model didn’t account for negatively or positively charged particles 
  • Negative - raisins in the pudding
  • Positive - dough of the pudding
  • Explain some electrical properties due to the electron, but failed to recognize the positive charges
    • ]]>     2017-02-15 19:19:43 UTC https://padlet.com/nicoleashleytabiolo/ot6rzld6qrvy/wish/154134524     jewel_fontanilla https://padlet.com/nicoleashleytabiolo/ot6rzld6qrvy/wish/154223052 2017-02-16 05:15:46 UTC https://padlet.com/nicoleashleytabiolo/ot6rzld6qrvy/wish/154223052 jewel_fontanilla https://padlet.com/nicoleashleytabiolo/ot6rzld6qrvy/wish/154224443 2017-02-16 05:34:03 UTC https://padlet.com/nicoleashleytabiolo/ot6rzld6qrvy/wish/154224443 John Dalton nicoleashleytabiolo https://padlet.com/nicoleashleytabiolo/ot6rzld6qrvy/wish/154229778
  • September 6, 1766- July 27, 1844
  • Chemist
  • Lived to be 78 years old
  • won a Royal medal
    • Known for...
    • the Atomic Theory
    To Dalton's Theory, there are 2 laws, the law of conservation of mass and the law of constant composition. He planned that all matter is created out of very small particles that can't be separated (atoms). He or, well, his theory says that all atoms granted factors are much alike in mass and properties. It also combines two or more several kinds of atoms, and that a chemical reaction is reordering of the atoms.
    • Law of multiple proportions
    • Dalton's Law
    • Color blindness
    ]]>     2017-02-16 06:54:19 UTC https://padlet.com/nicoleashleytabiolo/ot6rzld6qrvy/wish/154229778     nicoleashleytabiolo https://padlet.com/nicoleashleytabiolo/ot6rzld6qrvy/wish/154231433 2017-02-16 07:13:23 UTC https://padlet.com/nicoleashleytabiolo/ot6rzld6qrvy/wish/154231433 nicoleashleytabiolo https://padlet.com/nicoleashleytabiolo/ot6rzld6qrvy/wish/154231486 2017-02-16 07:14:07 UTC https://padlet.com/nicoleashleytabiolo/ot6rzld6qrvy/wish/154231486 nicoleashleytabiolo https://padlet.com/nicoleashleytabiolo/ot6rzld6qrvy/wish/154535351 2017-02-17 08:53:44 UTC https://padlet.com/nicoleashleytabiolo/ot6rzld6qrvy/wish/154535351 nicoleashleytabiolo https://padlet.com/nicoleashleytabiolo/ot6rzld6qrvy/wish/154535594 2017-02-17 08:55:44 UTC https://padlet.com/nicoleashleytabiolo/ot6rzld6qrvy/wish/154535594 Erwin Schrödinger nicoleashleytabiolo https://padlet.com/nicoleashleytabiolo/ot6rzld6qrvy/wish/154536114
  • August 12, 1887- January 4, 1961
  • Physicist
  • Lived to be 74 years old
  • won 3 awards
    • Known for...
    • Schrödinger equation
    • Schrödinger's cat
    • Schrödinger method
    • Rayleigh-Schrödinger perturbation Coherent states
    • Energy level
    • Qualia
    • Quantum biology
    • Quantum superposition
    • He handled with specific heats of solids, with problems of thermodynamics and atomic spectra. 
    • His major discovery,  Schrödinger's wave equation, ended during the  first half of 1926.
    • His belief of the atomic spectra really should be set on some eigenvalue problem. He then won and shared this with Dirac the Nobel prize for 1933.
    • 1955 he continued his research  and he published lot of papers on sort of topics.
    • He wrote a well-known book called "What is Life?" in 1944
    ]]>     2017-02-17 09:00:12 UTC https://padlet.com/nicoleashleytabiolo/ot6rzld6qrvy/wish/154536114     nicoleashleytabiolo https://padlet.com/nicoleashleytabiolo/ot6rzld6qrvy/wish/154668198 2017-02-17 18:34:52 UTC https://padlet.com/nicoleashleytabiolo/ot6rzld6qrvy/wish/154668198 nicoleashleytabiolo https://padlet.com/nicoleashleytabiolo/ot6rzld6qrvy/wish/154670833 2017-02-17 18:45:27 UTC https://padlet.com/nicoleashleytabiolo/ot6rzld6qrvy/wish/154670833 James Chadwick nicoleashleytabiolo https://padlet.com/nicoleashleytabiolo/ot6rzld6qrvy/wish/154671584
  • October 20, 1891- July 24, 1974
  • Physicist
  • Lived to be 83 years old
  • won 5 awards
  • In 1932, he proved that neutrons existed. It's elementary particles was lacking of any electrical charge.
  • In contrast with the helium nuclei (alpha rays) which are charged, and therefore repelled by the considerable electrical forces present in the nuclei of heavy atoms, this new tool in atomic disintegration need not overcome any electric barrier and is capable of penetrating and splitting the nuclei of even the heaviest elements. Chadwick in this way prepared the way towards the fission of uranium 235 and towards the creation of the atomic bomb. For this epoch-making discovery he was awarded the Hughes Medal of the Royal Society in 1932, and subsequently the Nobel Prize for Physics in 1935.
  • Chadwick has had many papers published on the topic of radioactivity and connected problems and, with Lord Rutherford and C. D. Ellis, he is co-author of the book Radiations from Radioactive substances (1930).
    • ]]>     2017-02-17 18:48:32 UTC https://padlet.com/nicoleashleytabiolo/ot6rzld6qrvy/wish/154671584     nicoleashleytabiolo https://padlet.com/nicoleashleytabiolo/ot6rzld6qrvy/wish/154680180 2017-02-17 19:19:48 UTC https://padlet.com/nicoleashleytabiolo/ot6rzld6qrvy/wish/154680180 Chadwick (1932) discovers nicoleashleytabiolo https://padlet.com/nicoleashleytabiolo/ot6rzld6qrvy/wish/154683808 2017-02-17 19:30:54 UTC https://padlet.com/nicoleashleytabiolo/ot6rzld6qrvy/wish/154683808 James Chadwick 1891-1974 He nicoleashleytabiolo https://padlet.com/nicoleashleytabiolo/ot6rzld6qrvy/wish/154684402 2017-02-17 19:32:53 UTC https://padlet.com/nicoleashleytabiolo/ot6rzld6qrvy/wish/154684402