Timeline of atomic structure

Timeline of atomic structure

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  • Oh hi my epistimi filous! My name is Democritus from about 450 BC, i discovered the name atoms from the greek word atomus which means 'indivisible'. I found out that there are tiny particles. Remeber what i said and don't igonre it like the people after me have. Gosh people are so ignorant, anyways i do talk alot. Read on my epistimi filous.
  • Hey! I kind of stole Democritus' idea, don't tell him though. I know much more than him let me explain, atoms are like hard balls that cannot be split , but can join together and make all materials in the universe. Great fact right. Before i go i'm from the year 1803.
  • I'm JJ Thompson from 1987 and i discovered the electrons. I believe they are distributed equally throughout the atom. Or as you people may know as the 'plum pudding' model of the atom. To be honest i was eating my daily plum pudding at tea time and realised it had so much to do with the atom. Amazing what you discover at tea time.
  • I did the great experiment: the gold leaf experiment. I fired alpha particles at a gold foil. Some passed straight through but a few bounced back. I came to a conclusion that atoms are mostly empty space but contain a small dense nucleus.  I forgot to introduce myself my name is Ernest Rutherford from 1907.  Wait i basically proved Thompson wrong!
  • I'm Neils Bohr and i say that electrons orbit the nucleus in fixed layers which are called electron shells. I'm not that old, i'm from the year 1913.
  • I'm the last of them all at 1932. My name's James Chadwick and i discovered neutrons. I found that they weigh the same as protons but have no electrical charge.
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