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The first person to discover the idea of the atomic theory. His idea of atomic theory was if you cut something and kept cuting into smaller and smaller pieces then; at some point, there would be a piece which would be so small as invisible. He would call that a atoms
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He believes that earth is made up of Earth, Fire, Water, and Air.
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matter is made up small indestructible units he called atoms
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His theory of atomic theory was that the atom invisible and indestructible building blocks.
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He contributed with using his knowledge in electromagnetism and electrochemistry, and how electrical forces was responsible for joining atoms compounds.
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Built one of the first gas discharge tubes
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Discovered a relating pattern in chemical properties, when the elements are organised it increases in atomic mass
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He made the discovery of the element thallium
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He discovered protons
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He introduced the term electron
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Thomson made a discovery that the solid ball model of the atom was wrong.
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He tested how alpha particles were fired to to a sheet of gold foil. Which it proved the existence of a nucleus
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She and her husband Pierre discovered the radioactive elements polonium and radium.
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His work contributed significantly to the understanding of atomic and subatomic processes.
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He was involved and we'll know for nuclear reactions. He also proved the existence of isotopes of certain radioactive elements.
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He made a planetary model of the atom, which made two predictions.
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the number of other atoms with which an atom of the element can combine.
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Determined the atomic number of each element known.
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He founded a device that separates and measures atoms or molecular fragments.
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He found the idea on the fact gravity pulls things together
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He founded the theory and for predicting the wave nature of electrons.
