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Democritus a greek philosopher also so known as the "Laughing philosopher." Said that all things originated from a vortex of tiny partices called atoms.
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Lavoisier in known as the father of modern chemistry and for naming many elements.And also establishing sulfur as an element.
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Prposed by Antoine Lavoisier which states that mass cannot be created nor destroyed.
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Said that a pure substance is pure to the last atom.Meaning that gold is gold till the last atom.
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Said and is still used today that atoms cannot be subdivided, created, or destroyed.
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The creator of the first periodic table of elements
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Conducted by J.J Thomson showed a ray of negativley charged particles called electrons.
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Thomson identified that electrons were part of an atom.
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The plum pudding model showed how a negatively charged nucleus was surrounded by a positively particles.
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This expirement showed that most of the atoms mass is located in the dense region known as the nucleus.
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Experimented the elementary electric charge (charge of the electron) to prove a negative charge.
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Rutherford's model is basicly the planetary system.Revised by Niels Bohr sometimes called the Rutherford-Bohr Model.
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He postulated the structure of the atom.He found positively charged central reigion.
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Niels Bohr was the man that made the Bohr Planetary model.
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The first periodic table by atomic number.
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It was a model of an atom much like the solar system showing the nucleus acting as the sun surrounded by electrons acting as planets held together by an electrostatic force mush like gravity.
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Erwin was the first to suggest how the electrons were spaced throughout an atom.
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Made by Erwin Schrodinger correctly defines the electrons movement with the relation to the nucleus. Shows that electrons are in random motionconfined within areas.
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Created by Erwin Schrodinger. It is a space of an atom where electrons are likley to be found.
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Chadwick discoverd a no charge particle called a neutron.Crucial for the discovery of Uranium-235 and plutonium.
