History Of The Atom Flashcards
1
Q
Who discovered neutrons?
A
James Chadwick (in 1932)
2
Q
Who created the plum pudding model?
A
J. J. Thomson (in 1897)
3
Q
What was the alpha scattering experiment?
A
. Positively charged alpha particles were fired at a thin sheet of gold foil
. Most went straight through but a few scattered
4
Q
What conclusions did the alpha scattering experiment lead to?
A
. Most of an atom is empty space
. Concentrated mass in the middle
. Atom contains positive protons (in the middle)
5
Q
What model was created as a result of the alpha scattering experiment?
A
Nuclear model
6
Q
Who created the nuclear model?
A
Ernest Rutherford (in 1911)
7
Q
Who discovered protons?
A
Ernest Rutherford (in 1917)
