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Discovering Atomic Structure: Thompson, Rutherford, and Fundamental Particles

This overview explores key experiments in atomic research, including J.J. Thompson's cathode ray tube work that provided evidence for the electron, and Ernest Rutherford's gold foil experiment that uncovered the proton's role at the center of mass. The intrinsic properties of protons and electrons are examined, highlighting their masses and charges, and the basic structure of neutral atoms with an equal number of protons and electrons. The ongoing contributions of these scientists, including seven Nobel Prize winners among their ranks, underscore the significant advancements in understanding atomic structure.

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Discovering Atomic Structure: Thompson, Rutherford, and Fundamental Particles

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Presentation Transcript

  1. Some Experiments!

  2. JJ Thompson • Cathode Ray Tube • Provided evidence of electron seven of his research assistants and his son won Nobel Prizes in physics

  3. Ernest Rutherford • Discovered protons jammed together in center of mass • Gold Foil Experiment

  4. Atomic Mass • Protons plus neutrons • 1 proton = 0.00000000000000000000000166053886 g 1 electron = 0.0000000000000000000000000001675g • 1 proton = 1 amu • 1 electron = 0amu • Mass of proton = mass of neutron

  5. Charges • Electron has charge of -1 • Proton has charge of +1 • How many protons and electrons does a neutral atom have?

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