development of the atomic model Flashcards
who found the plum pudding model?
J.J Thopmson
who found the nuclear model?
Earnest Rutherford
who discovered electron shells?
Niels Bohr
who discovered neutral particles?
James Chadwick
who discovered protons after Bohr?
Earnest Rutherford
who has done a scientific discovery about forming compounds?
John Dalton
what did Rutherford predict? what happened? why?
the particles would pass through the plum pudding
most particles did but 1 in 8000reflected back
some particles collided with positive particles in the nucleus
what does the plum pudding model show us?
there is a ball of positive charge with electrons in it
what does the nuclear model show us?
there are neutrons and protons in a nucleus woth electrons orbiting it on shells
timeline the scientists in order of years
- John Dalton
- J.J Thompson
- Earnest Rutherford
- Niels Bohr
- James Chadwick