How did the Alpha Scattering Experiment disprove the Plum Pudding Model?Watch
Also, did the plum pudding state that all the electrons located around it had the same charge as the 'positive' region but opposite?
The Alpha Scattering Experiment had three outcomes, and they proved different things:
1) Most of the particles passed through the foil in a straight line. Therefore, most of the atom must be empty space.
2) Some particles were deflected back towards the source. Therefore, the atom must have a nucleus. This nucleus must be massive (i.e. heavy (not necessarily large)), as alpha particles bounce off it. However, as point 1 says, most of the atom is empty, so the nucleus must be very small, and so therefore it is very dense.
3) Some particles went off at weird angles after passing through the foil. Therefore, the nucleus has a positive charge as the electromagnetic force must be what pushes the (positively charged) alpha particles off course.
In conclusion, an atom is:
-Mainly empty space and the centre is a small, dense nucleus with a positive charge.
This does not fit the plum pudding model (e.g. the 'sphere of positive charge' is not the same as 'empty space'), so therefore the evidence disproves it.