Chapter 2.1 Flashcards
1
Q
What was Rutherford’s gold foil experiment?
A
Where he fired alpha particles at a thin sheet of gold foil.
2
Q
What was the prediction of the results of the gold foil experiment?
A
It was predicted that these alpha particles would go straight through the gold foil without being deflected
3
Q
What were the results of the gold foil experiment?
A
A small percentage of particles were deflected at angles greater than 90 degrees.
Some particles were even scattered back.
4
Q
What do the results of the gold foil experiment show?
A
- The atom was mainly empty space instead of a solid (plum pudding model)
- The atom had a nucleus as the alpha particles sometimes hit the nucleus and got deflected backwards.
5
Q
What subatomic particles does an atom have?
A
An atom is made up of positively charged protons and neutral neutrons in its nucleus, with negatively charged electrons moving around the nucleus in shells.
