plum pudding 0.0 / 5 ? Physicsplum puddingGCSEAQA Created by: asho glenoCreated on: 09-04-15 18:42 In 1804, John Dalton agreed with Democritus that matter was made up of tiny spheres... (atoms) that could be broken up 1 of 8 100 years later, JJ Thompson discovered that electrons... could be removed from atoms 2 of 8 Thompson suggested that the atoms were spheres of positive charge with... tiny negative electrons stuck in them 3 of 8 In 1909, Rutherford and Marsden tried firing a beam of alpha particles at... thin gold foil 4 of 8 They expected the positively charged alpha particles to be slightly deflected by... the electrons in the plum pudding mode 5 of 8 However, most of the alpha particles just went straight through, but... the odd one came straight back at them 6 of 8 They also realised that the nucleus must have a positive charge... since it repelled the positive alpha particles 7 of 8 It also showed that most of the atom was just... empty space 8 of 8
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