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Atomic History, Atomic Structure - Coggle Diagram

- - - - Atomic Theory:
        
        All matter is composed of atoms
        
        Now: You can destroy an atom with nuclear reactions
        
        All atoms of an element have the same mass and other properties that distinguish them from other atoms
        
        Now: Isotopes
        
        Atoms combine to form compounds with whole number ratios
        
        Atoms cannot change to another elements. Chemical reactions involve rearrangement of atoms
        
        Now: nuclear reactions
      - JJ Thomson
        
        Contributions
        
        Cathode Ray Tube Experiment
        
        Plum Pudding Model
        
        atom is small mass of positive matter with negative electrons embedded in it
        
        determined mass of an electron
        
        Milikan
        
        Contributions
        
        Oil Drop Experiment
        
        found charge of an electron
        
        Rutherford
        
        Contributions
        
        proved existence of the nucleus
        
        Gold Foil Experiment
        
        Nucleus Model
        
        Goldstein
        
        Contributions
        
        proved the existence of the proton
        
        Canal Tube experiment
        
        James Chadwick
        
        Contributions
        
        1 more item...
    - - named 55 elements and classified them
      - conservation of mass
      - proved water and air were compounds