What Are The Different Atomic Models? Dalton, Rutherford, Bohr and Heisenberg Models Explained
Science ABC
Sep 8, 2021 11:00
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Chapters
What are the different atomic models and how did our understanding of the atom evolve? In this video, we explain the history of atomic theory in simple words — from Democritus' "uncuttable" particles in 400 BC, through Dalton's solid spheres, Thomson's plum pudding model, Rutherford's gold foil experiment that discovered the nucleus, Bohr's quantized electron shells, to the modern quantum mechanical model where electrons exist as probability clouds. Learn how each model built on (and disproved) the one before it.
Whether you're a chemistry or physics student preparing for an exam, or curious about how centuries of scientific curiosity revealed what's inside an atom, this beginner-friendly animated explainer covers every major atomic model.
CHAPTERS:
WATCH NEXT:
▶ Quantum Mechanics Explained in Simple Words – https://youtu.be/p9pPjASnnxw
▶ What is Radioactivity? – https://youtu.be/M0uw4ZNpqcI
▶ Isotopes Explained in Simple Words – https://youtu.be/oj2Wl83NytU
KEY TOPICS COVERED:
• Democritus (400 BC): the first idea of indivisible particles ("atomos")
• Dalton's atomic theory: solid spheres, law of multiple proportions
• Thomson's plum pudding model: discovering the electron via cathode rays
• Rutherford's nuclear model: the gold foil experiment that changed everything
• Bohr's model: quantized energy levels keep electrons from collapsing
• Schrödinger's quantum model: electrons as probability clouds in orbitals
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REFERENCES:
http://abyss.uoregon.edu/~js/ast123/lectures/lec04.html
https://pressbooks-dev.oer.hawaii.edu/chemistry/chapter/evolution-of-atomic-theory/
Original Article: https://www.scienceabc.com/pure-sciences/what-are-different-atomic-models.html
Voice Over: John Staughton (https://www.fiverr.com/jswildwood)
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