Model atom Thomson dikenal sebagai "plum pudding model" atau yang sering kita dengar "model roti kismis". Thomson menyatakan bahwa, atom terdiri dari awan bermuatan positif yang terdistribusi sedemikian rupa dengan muatan negative tersebar secara random di dalamnya.
How did Rutherford figure out the structure of the atom without being able to see it? Simulate the famous experiment in which he disproved the Plum Pudding model of the atom by observing alpha particles bouncing off atoms and determining that they must have a small core.
1911: Ernest Rutherford's gold-foil experiments demonstrate that atoms have a solid nucleus. Top: Expected results: alpha particles passing through the plum pudding model of the atom undisturbed. Bottom: Observed results: a small portion of the particles were deflected, indicating a small, concentrated charge.