Atomic Model

Atomic Model

1. Atomic Structure Change

   • JJ Thompson
     • figured out atoms weren't solid spheres
     • discovered electrons
     • created plum pudding model
   • Rutherford
     • famous gold foil experiment
       • fired positive charged alpha particles at a sheet of gold
         • expected all to pass through
         • more than expected deflected
       • came up with the nuclear atom model to explain
         • tiny positive nucleus
         • cloud of negative electrons
   • Neils Bohr
     • Came up with the idea of electron shells

2. Atom Structure

   • necleus
     • Protons
       • positively charged
     • neutrons
       • neutral
     • overall positive
     • most of the mass
   • the rest is empty space
   • electrons whizz around
     • give atom the big radius
   • atoms join to form molecules