Which best describes the effect of j. j. thomson’s discovery? the accepted model of the atom was changed. the accepted model of the atom was supported. cathode ray tubes were no longer used in experiments due to poor results. cathode ray tubes became the only instrument of use in the study of atoms.

answer is A the accepted model of the atom was changed

Answer is: the accepted model of the atom was changed.

J.J. Thomson placed two oppositely charged electric plates around the cathode ray. He did experiments using different metals as electrode materials and found that the properties of the cathode ray remained constant no matter what cathode material he used.

Tomson concluded that atoms are divisible and that the corpuscles are their building blocks (atoms are made up of smaller particles).  

J. J. Thomson discovered the electron in 1897.  

His "plum pudding" model (1904) suggested: the electrons are embedded in the positive charge.  

With this model, he abandoned his earlier hypothesis (the atom was composed of immaterial vortices).  

false

because it does not have the potential to be entirely used up