The History of the Atom Comic 2
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Rutherford discovered that atoms have a small charged nucleus surrounded by largely empty space, and are circled by tiny electrons.
Alright class what have you learned?
The idea that all matter is made up of tiny, indivisible particles, or atoms, is believed to have originated with the Greek.
Light is absorbed when an electron jumps to a higher energy orbit and emitted when an electron falls into a lower energy orbit.
Democritus first suggested the existence of the atom but it took almost two millennia before the atom was placed on a solid foothold as a fundamental chemical object by John Dalton.
James Chadwick discovered the Neutron in atoms.
Thomson discovered the electron by experimenting with a Crookes, or cathode ray, tube.
Great Class!I can see you all have learned a lot.
Wolfgang Pauli introduced two new numbers and formulated the Pauli principle, which proposed that no two electrons in an atom could have identical sets of quantum numbers.
Marie Curie discovery of two new radioactive elements, polonium and radium, and forced scientists to change their ideas about the structure of the atom.
Schrödinger used mathematical equations to describe the likelihood of finding an electron in a certain position.
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