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All things are made of indestructible, indivisible atoms that are always moving and never stop moving. Two types of reality, atoms and voids (blank, empty space). atomos = indivisible
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Every element is made of different atoms with different masses. Compounds are numerous atoms or elements combined. His model looked like a marble. He also established the atomic theory.
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Aided Thomson in many of his discoveries. He also found that ions have charges (+/-). Worked with cathode rays and worked on the basis of mass spectrometry.
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By experimenting with the cathode ray, he found when magnets deflected the rays there were smaller particles, called electrons. Plum pudding model of the atom.
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She discovered the element of radium, and altered the way scientists think about energy and matter.
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By using the "Oil Drop" experiment he found how to get an electrons mass with the help of Thomson. Also attempted to measure the effect of individual subatomic particles.
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He discovered the noble gas thoron and also discovered the concept of the nucleus.
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He applied the quantum theory to Rutherford's atomic structure by assuming that electrons travel in stationary orbits, leading to the calculation of energy levels.
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He discovered the neutron, which aided in the creation of Uranium-235 that led to the creation of the atomic bomb.