The History of the Atom Flashcards
1
Q
Who described atoms as solid spheres?
A
John Dalton
2
Q
How came up with the theory of the plum pudding model?
A
JJ Thompson
3
Q
What is the plum pudding model?
A
An atom as a ball of positive charge with electrons
4
Q
Who proved that the plum pudding model was wrong?
A
Ernest Rutherford
5
Q
explain the steps of Ernest Rutherford’s experiment that proved the plum pudding model was wrong?
A
He fired alpha particles at a thin sheet of gold this meant the alpha particles where deflected meaning the atoms must be positively charged
6
Q
What was Bohr’s atomic model?
A
That electrons orbited the nucleus in fixed shells
