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101
Democritus
he believed all matter is made of none divisable things called atoms,
he believed all atoms in things felt different like water was round and smooth, -
john dalton
all elements are composed of atoms, all atoms of the same element have the sme mass. and atoms of different elements have different masses. Compounds contain atoms of more than one element. -
Werner Heisenberg & Erwin Schrodinger
Erwin created the electron cloud because he couldnt figure out the area the electrons where. -
Neil Bohr
his theory was that other atoms electrons circled the nucleus.
He proposed the levels in hydrogen was very big. -
j.j thompson
he believed that atoms were made of seperate parts not a single part.
he used a typical english dish called plum pudding like object for his model. he used a glass like object to with objects attacted to it. -
Rutherford
he discoverd the nucleus. He discovered that fast moving that orbits the atom. -
Hantaro Nagaoka
he was the one who proposed the plum pudding model and expanded it. His model was one with a large nucleus and electrons circling it. -
James Chadwick
James founded the neutron and he proposed that the raditativity of the atoms was because of the neutron
