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Aristole- opposed the atomic theory
Democritus- theorized the first atomic theory
Both were Greek philosphers! -
First Modern Chemist
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Created Coulomb's LAw and the SI Unit of electric charge also called the Coulomb.
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A scientific theory of the nature of matter, which states that matter is composed of atoms. A pre-modern atomic theory was proposed by Greek philosophers Democritus, Leucippus, and the Epicureans who theorized there were invisible atoms and an empty void.
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Theriozed the Law of Definate Proportions or Proust's Law.
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English chemist who developed the modern atomic theory.
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Antoine Lavoiser states that for any system closed to all transfers of matter and energy the mass must stay the constant over time because it can not change when nothing is added or taken away.
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Also known as Proust's Law, it explains that a chemical compound always contains exactly the same proporton of elements as according to mass. Joseph Proust was the scientist who came up with this theory.
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Dalton created this model.
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Theorized special relitivity and quantum mechanics.
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Discovered anode rays and is sometimes credited withn the discovery of the proton.
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Father of neuclear physics.
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Explained radioactivity and also proved isotops exist in radioactive elements.
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Theorized the general theory of relitivity, had a lot to do with the field of quantum mechanics, and much more.
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J.J. Thomson sugested atoms have parts based off of Jean Perrin's 1895 experiment. He took a pair of metal cylnders with a slit in them, connected it to an electometer, and bent the ray with a magnet. He seperated the charge from the rays. When they entered the slit, there was a negative charge. He realized the negative charge and cathode rays must be stuck together considering you cannot seperate them.
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Theorized by Richard Laming in 1838 and G. Johnstone Stoney in 1874, the elcetron was discovered by J.J. Thomson in 1897. It is a subatomic particle with a negative elcetric chage of 1. It is represented by e-.
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Physics based on the principle that matter and energy have the properties of both particles and waves. Max Planck theorized that energy can be emitted or absorbed by matter only in small units called quantra.
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Created the Pauli Principle or spin theory which is underpinning the structure of matter and whole of chemisty.
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Contributed to quantum mechanics and the uncertainty principle.
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J.J. Thomson created this model which later disproved.
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Rutherford published this experiment in 1911 after seeing J.J. Thomsons "plum pudding" model (1904). Hans Geiger and Earnest Marsden helped him in conducting it. Rutherford accidentally demonstrated the existance of the nucleus and disproved the plum pudding model.
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Rutherford created this model.
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Nobel Prize for Chemisty because of the transranium elements he discovered and the actinide concept.
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Bohr theorized this model.
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William Prout was the person to theroized this subatomic particle with a positive electric charge of 1. It is often reffered to as p+. It got its name from Ernest Rutherford (who also discovered it in 1920).
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Schrodinger's model.
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The Uncertainty Principle is the idea that the momentum and position of a particle cannot both be precicely determined at the same time. Werner Heisenburg therorized this fundamental principle.
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Although theorized in 1920 by Ernest Rutherford, the neutron was discovered in 1932 by James Chadwick. It has no net electical charge and is also a subatomic particle. It can be written as n0.
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