8 Scientists Who Contributed To The Atomic Theory

Question: Democritus

Answer: Invented the idea of the atom, thought that atoms were indivisible, believed that different states of matter had differently shaped atoms.

Question: John Dalton

Answer: Postulated that Atoms were dense spheres, proposed that atoms of the same element are identical, stated that chemical reactions are the rearrangement of atoms.

Question: J.J. Thomson

Answer: Discovered electrons, developed the Plum Pudding Model

Question: Max Planck

Answer: Discovered that light and other electromagnetic waves were emitted in packets of energy called “quanta”

Question: Robert Millikan

Answer: Performed the Oil Drop experiment, discovered the charge of electrons

Donation Page

Support Our Work

Do you appreciate the value this website provides? If so, please consider donating to help keep it running. Your donation will go a long way in helping us continue to provide the same quality of content and services. Every bit helps, and your support is greatly appreciated. Thank you for your generosity.