The History of Atomic Theory

forces within the atom

a molecule with two atoms

negatively-charged electrons

positively-charged protons

electric and magnetic fields

atomic theories

tiny particles

solid atoms

Rutherford looked for magnetic fields, while Thomson looked for electric fields.

Rutherford repeated Thomson's experiment and confirmed the results.

Rutherford tested a conclusion based on Thomson's results.

Rutherford had not known about Thomson's experiment.

James Maxwell

John Dalton

James Chadwick

Sir Isaac Newton

said that atoms are solid masses

showed that electrons surround a dense nucleus

found that atoms are made of smaller particles

proposed that atoms contain electric fields