Early models of the atom

John Dalton

Made in 1808, wanted to explain 3 fundemental laws of chemistry, no experiment

True

Postulate where matter jis composed of tiny particals called atoms

False

Atoms of a given element are the same size

False

Atoms cannot be subdivided

True

Atoms of diferent elements combined in who number ratios to form chemical compounds

True

In chemical reactions atoms are combined seperated or rearranged

JJ Thomson

Father of the electron, plum pudding model, cathode ray experiment, proved electrons, atom is nuetral.He assumed that positive and negative charges were everywhere in the atom

Ernest Rutherford

1911, found nucleus and where positive atoms are used gold foil experiment to demonstrate that atoms consist of a small, dense nucleus surrounded by electrons.