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Law of consservation of mass Discovered mass and that it is the same in differnent forms. He also helped develope the metric system.
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Daltons Atomic Theory: Atoms from differnt elements are different but can be identified by their wieght
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Created first periodic table. Later won a nobel peace prize for it.
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Discovered the electron
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Karl Ferdinand Brain invents cathode ray tube. Forernner for radar and radio tubes
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He is credited with measuring the charge of an electron and the oil drop expirement.
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conducted gold foil expirement: atom are mainly open space with small hard nucleas in center
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electrons surrond positive charge
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Sorted elements based off of their atomic number instead of atomic mass.
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credited with Bohr planetary model and theory that electrons travel in specific planes
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Mondern day accepeted model of an atom.
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Credited with mathmaticaly showing where electrons are in an atom.
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James Chadwick is crdited with the discovery of the neutron.
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modern day model of an electron cloud.
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all things are made of tiny indestructable things called atoms.