yeah for 6 points you need 6 marks. And why is your answer sooo short?
Mate... always stick to the point okay?
So if I were you I would write
"The plum pudding model suggested that mass and charge were spread throughout the atom and you had negatively charged particles (plums) in a postively charged atom (pudding). However, experimentally speaking, Rutherford used charged alpha particles (positively charged) and fired them at a gold foil. Most of the particles went through which suggested that the atom is mainly empty space unlike the plum pudding model where if this model were to be true, most of the particles wouldve bounced back (positive and positive repel). Few particles deflected at an angle greater than 90 degrees (came away from the screen) which suggested that most of the atoms mass is at the centre and contains most of the atoms mass and is also positively charged."