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Antoine Lavoisier's Law of Conservation of Mass
Lavoisier's Law of Conservation of Mass states that mass is neither created nor destroyed in a chemical reaction. This law helped future scientists in the development of the atom. -
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Development of the Atom
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John Dalton's Spherical Model
Dalton proposed the first ever model of the atom. He stated that atoms were tiny, invisible particles. Each atom has a certain mass, size, and chemical behavior. -
Joseph Prousts' Law of Definite Proportions
Prousts' Law of Definite Proportions states that a chemical compound always contains exactly the same proportion of elements by mass. -
William Thomson, 1st Baron Kelvin
Kelvin proposed a theory that atoms were shaped like vortices spiralling around each other. Kelvins theory lead to the development of other theorys in the development of the atom. -
Thomsons Plum Pudding Model
Thomson conducted the Cathode Ray tube Experiment to make his Plum Pudding Model, which shows the atom (pudding) with scattered electrons in it (plums). -
Hans Geiger
Geiger was Rutherfords assistant in the Gold Foil Experiment which led to the discovery of the nucleus and the Nuclear Model. -
Ernest Rutherford's Nuclear Model
Rutherfords Gold Foil Experiment led to his proposing his theory of a nucleus. This later lead to his own atomic mddel, the Nuclear Model. -
Bohr's Model of the atom
Neils Bohr depicted the atom as a small, positively charged nucleus surrounded by electrons that travel in orbits thus creating his model of the atom -
Rutherfords discovery of the proton
Rutherford postulated hydrogen nuclei tobe a new particle, called the proton -
Schrodinger's Quantum Mechanical Model
Erwin Schrodinger used mathematical equations to describe the likelyhood of finding an electron in a certain position. Using this, Schrodinger created the Quantum mechanical model of the atom using the quantum theory. -
Wolfgang Pauli
Pauli used Heisenberg's theory to derive the observed spectrum of the Hydrogen atom. Pauli's work helped to credify Heisenberg's theory. -
Heisenberg's Uncertainty Principle
Heisenberg's Uncertainty Principle states that the more precisely the position is determined, the less precisely the momentum is known in this instant and vice versa. -
Chadwick's discovery of the neutron
Chadwick used scattered data to calculate the mass of this neutral particle.
