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c1 revision - Coggle Diagram
c1 revision
mixtures
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mixtures can be seperated be phisical prosesses. these prosesses do not envolve any chemicl ereactions and do not make any new substances
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atomic structure
john dalton discovered atoms in 1803, he belived that everything was made out of small spheres which could not be divided
jj thomson did experiments and discovered the electron. he then mad ethe plumb pudding model which was a big positive ball of charge with electrons embeded in it
in 1909 rutherford designed a experiment to test the plumb pudding model, it was a sheet of gold foil which he woulld shoot alpha particlas at. he saw that most of the particals went straight through bust some shot off in random directions, he then made a new model called the neuclear model
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