History of the Atom (AQA GCSE Chemistry): Flashcards
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Year Dalton published atomic theory
Year Dalton published atomic theory
1803
Dalton's description of atoms
Dalton's description of atoms
Indivisible and indestructible spheres
Discoverer of the electron
Discoverer of the electron
J.J. Thomson
Year electron discovered
Year electron discovered
1897
Thomson's atomic model name
Thomson's atomic model name
Plum pudding model
Plum pudding model description
Plum pudding model description
Ball of positive charge with electrons scattered throughout
Scientist who designed gold foil experiment
Scientist who designed gold foil experiment
Ernest Rutherford
Year of Rutherford's gold foil experiment
Year of Rutherford's gold foil experiment
1909
Particles Rutherford fired at gold foil
Particles Rutherford fired at gold foil
Alpha particles
Result for most alpha particles in experiment
Result for most alpha particles in experiment
Passed straight through foil
What passing particles showed about atoms
What passing particles showed about atoms
Mostly empty space
What deflected alpha particles revealed
What deflected alpha particles revealed
Small, dense, positive region at centre
Rutherford's atomic model name
Rutherford's atomic model name
Nuclear model
Properties of nucleus in nuclear model
Properties of nucleus in nuclear model
Positively charged, contains most of atom's mass