Never trust an atom, they make up everything! But, what is an atom and what is an atom made of? Episode 2 reviews the history of the discovery of the atomic structure. It starts with Democritus who established the term “atom” (1:03), then fast forwards to Dalton, who provided experimental proof for Democritus idea (2:00). J.J. Thomson discovered the electrons (2:35), Ernest Rutherford protons (3:40) and Chadwick neutrons (4:30). The arrangement of these subatomic particles is described by Bohr’s Atomic Model (5:08).
Why was it significantly harder to prove the existence of neutrons? (6:22)
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