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WorksheetsAtomic Theory
Total questions: 14
Worksheet time: 4hrs 30mins
What were J. J. Thomson's three contributions to the atomic theory?
Discovered the electron
Discovered the nucleus -did the gold foil experiment
Used the cathode ray tube in his discovery
Created a model of the atom with electrons moving around the nucleus in fixed orbits
Created the "plum pudding" model of the atom
What explains the path of the cathode ray in the image above?
Gravity pulls the particles down.
The particles are repelled by the positive electrode.
The particles are attracted towards the negative electrode.
The particles are deflected away from the negative electrode and attracted to the positive electrode.
According to the model Bohr created, electrons orbit the nucleus in defined locations known as
carapaces
integuments
cartridges
shells
