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  • EVERYTHING IS MADE OUT OF ATOMS! Atoms mean 'indivisible'. They are so small they can't be cut more.
  • 450BC - Philosopher Democritus
  • Elements are made of extremely small particles called atoms. They are very tiny spheres that cannot be divided.
  • 1803 - John Dalton
  • I just found out about something called electrons! I was eating a plum pudding when 'BANG' it all just came to me. Electrons negative charge and are distributed throughout the atom, with a positive charge in the middle.
  • 1897 - J.J Thompson (Plum Pudding Model)
  • WOW!I have just discovered the nucleus and the protons in an single atom! I used some gold leaf and alpha particles to help me! Radiation of course!  Atoms are mostly empty space but with a nucleus. 
  • 1907 - Ernest Rutherford (gold leaf)
  • Did you know that electrons orbit the nucleus in fixed layers, which are also called shells! 2 in the 1st, 8 in the 2nd and 3rd. 
  • 1913- Niels Bohr
  • Have you ever heard of neutrons! Well not until today you haven't! They weigh the same as protons and are in atoms... but they carry no electrical charge at all! How weird.
  • 1932- James Chadwick
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