Scifientic Models Of Atom

Question 1

Plum pudding model

Answer 1

1898, Thomson

-thought at atoms contained tiny negative electrons surrounded by a sea of positive charge

Question 2

Geiger and Marsden

Answer 2

• bombarded thin sheet of gold with alpha particles
• most positively charged alpha particles pass through the atoms but a small amount was deflected back
• Rutherford looked at this and said there is a positive charge in an atom