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Some Experiments!

This article explores the groundbreaking experiments by J.J. Thomson and Ernest Rutherford that shaped our understanding of atomic structure. Thomson's cathode ray tube experiment provided the first evidence of the electron, while Rutherford's gold foil experiment unveiled the nucleus containing protons. We discuss the mass and charge of fundamental particles, highlighting that one proton has a mass of approximately 1 amu and a charge of +1, while an electron has a mass close to zero and a charge of -1. Together, these insights laid the foundation for modern atomic theory.

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Some Experiments!

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  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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