Plum Pudding Model - GCSE Physics Definition

The Plum Pudding Model is a historical idea about the structure of the atom that was proposed by the scientist J.J. Thomson in 1904. In this model, the atom is imagined to look like a plum pudding, a popular dessert. Picture the atom as a big sphere made of positive charge, like the sponge of the pudding. Within this sphere, tiny negative charges, called electrons, are scattered around like currants or plums in the pudding. This model was an early attempt to describe how atoms are put together, but later experiments showed that it was not entirely accurate. It was eventually replaced by the nuclear model of the atom, which was developed by Ernest Rutherford.