Plum pudding model

The Plum Pudding Model was an early idea about the structure of atoms. It imagined the atom as a sphere of positively charged material (like pudding) with tiny negatively charged particles called electrons embedded throughout (like plums in pudding). This model suggested that the atom was a uniform mass with electrons distributed inside. It was proposed before modern atomic theory and was later replaced by more accurate models after experiments showed that atoms have a small, dense nucleus. The model helped scientists understand that atoms are not just solid spheres but have internal structure.