Question

In the cathode ray tube experiment, J. J. Thomson passed an electric current through different gases inside a cathode ray tube in the presence of an electric field. In which two ways did this experiment change scientists’ understanding of the atom? A- It showed that atoms combine in different proportions. B-It showed that atoms can be divided into smaller parts.C- It showed that all atoms of the same element are similar. D-It showed that individual atoms could be destroyed. It showed that all atoms contain electrons.

Answer 1

The answer is: B-It showed that atoms can be divided into smaller parts.

It showed that all atoms contain electrons.

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).  

Answer 2

It showed that all atoms contain electrons