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Taysha st-louis Chemistry GCSE English 5 cards

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1Who suggested that substances were made of tiny spheres called ATOMS What year?J.Dalton
1803
2Who and in what year discovered the negatively charged electron? What did he believe?Thomson
1897
That the atom was made out of electrons in a cloud of positive(plum pudding model)
3Who proved Thomas' model wrong by proposing that the electrons were orbiting around the protons? What year?Rutherford
1911
4_____ noticed that the light given out when atoms were heated only had specific amounts of energy What did this suggest?What yr?Bohr
That the electrons were orbiting in shells
1914
5Chadwick discovered the presence of neutrons:Inside the nucleus
1932

Description: GCSE Chemistry Flashcards on history, created by Taysha st-louis on 18/06/2019.
Created by: Taysha st-louis
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