History of the Atom (OCR GCSE Chemistry A (Gateway Science Suite)): Flashcards
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Scientist who first published atomic theory in 1803
Scientist who first published atomic theory in 1803
John Dalton
Dalton's description of atoms
Dalton's description of atoms
Indivisible and indestructible spheres
Scientist who discovered the electron (1897)
Scientist who discovered the electron (1897)
J.J. Thomson
Thomson's atomic model name
Thomson's atomic model name
Plum pudding model
Plum pudding model structure
Plum pudding model structure
Ball of positive charge with electrons scattered throughout
Scientist who tested plum pudding model in 1909
Scientist who tested plum pudding model in 1909
Ernest Rutherford
Particles used in Rutherford's gold foil experiment
Particles used in Rutherford's gold foil experiment
Positively charged alpha particles
Behaviour of most alpha particles at gold foil
Behaviour of most alpha particles at gold foil
Passed straight through
What most alpha particles passing through indicated
What most alpha particles passing through indicated
Atoms are mostly empty space
Behaviour of small number of alpha particles
Behaviour of small number of alpha particles
Deflected in various directions
What alpha particle deflection showed
What alpha particle deflection showed
Small, dense, positive region at atom's center
Rutherford's atomic model name
Rutherford's atomic model name
Nuclear model
Characteristics of the nucleus
Characteristics of the nucleus
Positively charged, contains most of atom's mass