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Noone argued with his theory. He though all matter was fire,water,earth, or air.
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He believed everything was made of atoms.
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Parmedides believed everything was made of building blocks.
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1, All elements are composed of indivisible atoms.(false, nuclear reaction)2. Atoms of same element are of different elements are different. (false, isotopes, and ions)3.Atoms make compunds.4. Atoms are rearranged in chemical reactions.
Ballard Ball Model Not created, not changed, not destroyed -
He created the 1st periodic table. They were sorted by weights, and left gaps. Elements filled in gaps later.
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He discovered electrons but not details. "Cathode ray tube" (class tube of gas. This model is called the Plum-Pudding Model. It was a possitivley charged goop.
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He founds the charge and mass of a electron. It was 1/2000 Mass of atom.
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He found poss (protons) nucleus with electrons around. Nucleus is very tiny and dense.
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This experiment shot alpha particles at golden foil. They should have went straight through, but some bounded off. This showed there was a nucleaus, rest of space was empty.
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His theory was that the electrons orbited in rings. Also that they could jump orbit to orbit to emit energy.
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He discovered neutron.
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This project was nuclear research , created atomic bomb for WW11. This proved Daltons theory was wrong.
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Electrons arnt necessarily neat rings, but in different shaped clouds. This depended on energy level.
