The Atom Flashcards
1
Q
Who made the Plum Pudding model in 1897
A
J J Thomson
2
Q
At the start of the 19th century John Dalton described atoms as ____
A
Small Solid Spheres
3
Q
What experiment did Hans Geiger, Ernest Rutherford and Ernest Marsden do
A
The gold foil experiment
4
Q
In the experiment what happened
A
They fired positively charged alpha particles at a extremely thin sheet of gold
5
Q
Rutherford discovered there was an _______ in the experiment
A
Nucleus
6
Q
What model do we use and refine
A
Bohr’s model
7
Q
Out of the electron,proton and neutron which ones mass is 0.0005
A
Electron
8
Q
What is the name given at the centre of the atom
A
Nucleus
