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Timeline of The Development of The Atomic Models

John Dalton proposed the billiard ball model of the atom in 1801, depicting atoms as solid spheres. Ernest Rutherford discovered the nuclear model through gold foil experiments in 1911, showing a small, dense nucleus. Niels Bohr introduced the planetary model in 1913, with electrons in energy levels orbiting the nucleus. In 1932, James Chadwick discovered neutrons in the nucleus, completing the modern atomic model of a small, dense nucleus surrounded by electrons.

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Rhissan Bongalosa Acebuche
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516 views1 page

Timeline of The Development of The Atomic Models

John Dalton proposed the billiard ball model of the atom in 1801, depicting atoms as solid spheres. Ernest Rutherford discovered the nuclear model through gold foil experiments in 1911, showing a small, dense nucleus. Niels Bohr introduced the planetary model in 1913, with electrons in energy levels orbiting the nucleus. In 1932, James Chadwick discovered neutrons in the nucleus, completing the modern atomic model of a small, dense nucleus surrounded by electrons.

Uploaded by

Rhissan Bongalosa Acebuche
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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TIMELINE OF THE DEVELOPMENT OF THE ATOMIC MODELS

I. Complete the timeline below by drawing the correct atomic model in this box: , writing the name of the scientist in
this box: , and indicating the name of the model inside this shape:

Choices:

Joseph John Thomson


John Dalton Nuclear Model
Neils Bohr Planetary Model/Energy Levels
Ernest Rutherford Electron Cloud/Quantum Mechanical Model
James Chadwick Billiard Ball/Solid Sphere Model
Werner Heisenberg and Erwin Schrodinger Atom with Neutrons in the Nucleus
Plum Pudding/Bread and Raisin Model
CHALLENGE!
Add the following in your timeline by writing the name of the scientist and the year of discovery. Write it in the correct place
in the timeline.

Robert Millikan (1910)


Eugene Goldstein (1885)- -discovered the charge of an electron which is
discovered PROTONS. 1.60217662 × 10-19 coulombs

II. Complete the diagram below to describe the latest atomic model.

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