Scientists and what they discovered- atoms

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John Dalton 1803

All matter consists of tiny particles that are indestructible and unchangeable. The atoms of one element are all alike and different from the atoms of another element. Atoms combine to form compounds.

Nieis Bohr 1913

An atom has a small positive nucleus with electrons around it travel in circular orbits similar to how planets orbit the sun

J.J Thomson 1903

Matter has subatomic particles. Electrons are embedded in a positively charged spherical cloud (Similar to rasins are embedded in plum pudding)

Plato 360BC

Matter is made up of particles so small and indestructible that they cannot be divided into anything smaller

Ernest Rutherford 1911

The atom has a dense positive charge in the middle and negative particles move around it through space that is otherwise empty

De Broglie and Schrodinger 1920

The atom has a electron cloud. The electrons around it move like waves and like streams if particles at the same time. We don't know how they travel, just where they will most likely be based on probability

Leucippus $ Democritus 400BC

There are four elements earth, fire water air


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