Which best describes the effect of J. J. Thomson’s discovery? A.The accepted model of the atom was changed. B.The accepted model of the atom was supported. C.Cathode ray tubes were no longer used in experiments due to poor results. D.Cathode ray tubes became the only instrument of use in the study of atoms.
Chemistry · High School · Tue Nov 03 2020
Answered on
A. The accepted model of the atom was changed.
J. J. Thomson's discovery of the electron through his work with cathode ray tubes led to a significant change in the accepted model of the atom. Prior to Thomson's experiments, the prevailing model was the "plum pudding" model, which suggested that the atom was a uniform, positively charged sphere with electrons embedded like plums in a pudding. Thomson's discovery of electrons and his proposal of the "plum pudding" model altered the understanding of atomic structure, laying the groundwork for later models such as the nuclear model and the modern atomic model.