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Democritus composed all bodies are made of many atoms. Also saying everything generally dose. -
This model was referred to as Orrey. With a bunch of small atoms. -
The Alchemists laid the groundwork for chemical processes. Also attempted to find the Stone of Knowledge (Philosopher’s Stone). -
Robert Boyle demonstrated that particles of matter. He said these particles were in the atom & very small. -
Antone Lavoisier defined the law of conversions of mass. Saying it is 1 kg to 9.8 N. -
This model was referred to as a ball like structure. Also easy to relate to as 8-Balls. -
Suggested that all the matter was compromised of individual atoms. Also that they has masses and properties. -
Plato theorized that soils have small invisible elements shaped like a triangle. Proven to be true -
Amedeo Avogadro gas contains weight and doesn’t settle. -
Dmitri Mendeleev classified elements on the periodic table. -
JJ Thompson provided a model of the atom. The model of the atom was continued to be used in science. -
Pierre & Marie discovered the element polonium & Radium. Both elements on the periodic table now. -
The electrons were in a uniformed sphere. Also they had a positive charge. -
Albert Einstein, described each atom. He said it was an independent quantum harmonic oscillator with the same enfrenqueney. -
Robert Millikan said that electrons carried a charge. This charge was small at it flowed through electrons, in which electrons are small. -
Ernest Rutherford established that the mass of the atom coordinates to the nucleus. -
Neil’s Bohr proposed the theory of the Hydrogen atom. Proven to be a correct theory. -
Henry G.J. Mosley published the atomic number formula. This formula was used after. -
James Chadwich proved that the elements particle had electrical charge. -
A standard model of small particles. Still study today to see any patterns or changes.