History Of The Atom Flashcards
1
Q
Who and when was the plum pudding atomic model produced?
A
JJ Thomson produced it in 1897
2
Q
What was the plum pudding theory?
A
Negative charges were equally distributed inside a positive ‘dough’
3
Q
What was Rutherford’s experiment?
A
To fire alpha particles at gold foil which indicated a central positive matter surrounded by empty space
4
Q
What did most alpha particles do?
A
Passed straight through-atoms are made up of empty space
5
Q
What did some of the alpha particles do?
A
Deflected-a concentration of positive charge
6
Q
What did 1 in 1000 alpha particles do?
A
Deflected backwards- a very small concentration of mass and positive charge, a nucleus
7
Q
By who and when was the nucleus discovered?
A
1932 by Chadwick
