C1L3: Scientific Models of the Atom Flashcards
1
Q
What was the indivisible atom theory?
A
atoms were tiny, indivisible spheres
2
Q
What was the Plum Pudding Model?
A
ball of positive charge with electrons embedded
3
Q
Who created the Plum Pudding Model?
A
JJ Thomson
4
Q
What was the scattering experiment?
A
- alpha particles shot at gold foil
- some deflected
- positive charge concentrated in centre (nucleus)
- electrons orbit nucleus
5
Q
Who created the scattering experiment?
A
Ernest Rutherford
6
Q
What did Bohr conclude?
A
electrons orbit the nucleus at fixed distances
7
Q
What did Chadwick discover?
A
neutrons (no charge but have mass)
