History Of The Atom Flashcards
1
Q
Who and when made the plum pudding model?
A
1897 JJ Thomson concluded that atoms weren’t solid spheres
2
Q
What is the plum pudding model?
A
Atoms must contain even smaller, negatively charged particles- electrons.
3
Q
Who made the nuclear model and when?
A
1909 Ernest Rutherford and his student Ernest marsden conducted the alpha particle scattering method.
4
Q
What is the alpha particle scattering method?
A
Firing positively charged alpha particles at an extremely thin sheet of gold
5
Q
What were they expecting?
A
Expected particles to pass straight through the sheet or be slightly deflected.
6
Q
Why did this happen?
A
