Diese Präsentation wurde erfolgreich gemeldet.
Wir verwenden Ihre LinkedIn Profilangaben und Informationen zu Ihren Aktivitäten, um Anzeigen zu personalisieren und Ihnen relevantere Inhalte anzuzeigen. Sie können Ihre Anzeigeneinstellungen jederzeit ändern.
The Evolution of The  Atomic Theory
DemocritusLived: 460BC-370BCMain concepts: Everything is made of atoms Atoms are indivisible (cannot be  divided) Ato...
DaltonLived 1766-1844Main concepts: Each element has a different atom  and a different atomic weight All atoms of the ...
ThomsonLived: 1856-1940Main concepts:  Discovered that atoms ARE divisible  Discovered the electron through his   Cath...
RutherfordLived 1871-1937Discovered that there is a small, dense positively charged nucleusDiscovered that most of an a...
BohrLived 1885-1962Stated that electrons can only travel at specific distances from the nucleusStated that electrons ca...
ChadwickLived 1891-1974Discovered the previously unknown part of the nucleus of an atom- the Neutron!Named the neutron ...
Electron Cloud ModelThis is our most modern and accepted model of the atomIt differs from Bohr’s model because it states...
Time for:The atom song!http://www.youtube.com/wat     ch?v=vUzTQWn-wfE
Nächste SlideShare
Wird geladen in …5
×

Evolution of atomic theory

31.024 Aufrufe

Veröffentlicht am

Veröffentlicht in: Bildung
  • Loggen Sie sich ein, um Kommentare anzuzeigen.

Evolution of atomic theory

  1. 1. The Evolution of The Atomic Theory
  2. 2. DemocritusLived: 460BC-370BCMain concepts: Everything is made of atoms Atoms are indivisible (cannot be divided) Atoms are small and solid particles Named the atom (called it “atomos”)
  3. 3. DaltonLived 1766-1844Main concepts: Each element has a different atom and a different atomic weight All atoms of the same element are perfectly identical Atoms cannot be created or destroyed in chemical reactions.
  4. 4. ThomsonLived: 1856-1940Main concepts: Discovered that atoms ARE divisible Discovered the electron through his Cathode-Ray experiment Atoms have a much larger mass than electrons Inferred that atoms have a positive charge Plum Pudding Model
  5. 5. RutherfordLived 1871-1937Discovered that there is a small, dense positively charged nucleusDiscovered that most of an atoms mass is in it’s nucleusPredicted the existence of neutronsStated that electrons move rapidly in the empty space around the nucleusConducted the gold foil experimentStated that atoms are mostly empty space.
  6. 6. BohrLived 1885-1962Stated that electrons can only travel at specific distances from the nucleusStated that electrons can jump between levels/paths around the nucleusStated that the chemical properties of an element are determined by how many electrons are in the outer shell.
  7. 7. ChadwickLived 1891-1974Discovered the previously unknown part of the nucleus of an atom- the Neutron!Named the neutron because of it’s lack of an electrical charge.His discovery made it possible to create new elements in the laboratory (heavier than Uranium) which was not possible before.
  8. 8. Electron Cloud ModelThis is our most modern and accepted model of the atomIt differs from Bohr’s model because it states that the electrons can be found in a general region around the nucleus, not specific paths.
  9. 9. Time for:The atom song!http://www.youtube.com/wat ch?v=vUzTQWn-wfE

×