Developing the model of the atom 0.0 / 5 ? PhysicsAtomic structureGCSEAQA Created by: A128456Created on: 13-04-21 14:32 Who was the first person to think about the model of an atom? Democritus 1 of 6 Democritus said that "all matter was made up of..? identical lumps 2 of 6 What was J.J Thompson's model? The plum pudding model 3 of 6 In the alpha scattering experiment they observed that a few alpha particles were deflected back what did this show? Most of the mass was concentrated in the Centre in a tiny nucleus 4 of 6 James Chadwick discovered what particle ? Neutrons 5 of 6 Why do atoms have no overall charge? Protons and electrons have an equal but opposite charge 6 of 6
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