Discovery of the Proton & Neutron (AQA GCSE Physics): Flashcards
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Practise the cards
12 cards from this deck
Who created the spherical model & when?
Who created the spherical model & when?
John Dalton, 1803
Describe Dalton's spherical model
Describe Dalton's spherical model
Tiny spheres that can't be broken into smaller parts
Who discovered the electron & when?
Who discovered the electron & when?
JJ Thomson, 1909
Describe the plum pudding model
Describe the plum pudding model
Electrons in positively charged sphere, randomly distributed
Who conducted the gold foil experiment & when?
Who conducted the gold foil experiment & when?
Ernest Rutherford, 1909
What particles were used in gold foil experiment?
What particles were used in gold foil experiment?
Positively charged alpha particles
Main observation in gold foil experiment
Main observation in gold foil experiment
Most alpha particles went straight through foil
What did deflected alpha particles suggest?
What did deflected alpha particles suggest?
Small positive charges present in atom
Who discovered the proton & when?
Who discovered the proton & when?
Ernest Rutherford, 1917
What is a proton?
What is a proton?
Positively charged particle in nucleus
Where is the atom's mass located? (Rutherford)
Where is the atom's mass located? (Rutherford)
Very small and dense central nucleus
What atomic model came from Rutherford?
What atomic model came from Rutherford?
Nuclear model of the atom