Atomic Structure Flashcards
1
Q
JJ Thomson
A
Discovered the electron, plum pudding model,
2
Q
Ernest Rutherford
A
1909, designed an experiment for the plum pudding model, alpha particles at gold foil, changed it to nuclear model
3
Q
John dalton
A
1803, had ideas about atoms, thought matter was made of tiny particles, tiny spheres
4
Q
Plum pudding model
A
Ball of positive charge, negative electrons embedded inside it
5
Q
Experiment to test the plum pudding model
A
Positively charged alpha particles fired at thin gold foil, scattered in different directions
6
Q
Nuclear model
A
Mass of atom is concentrated at the nucleus, the nucleus is positively charged
7
Q
What is an atom
A
The smallest part of an element that can exist
