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

Thomson's experiment revealed that atoms can be divided into smaller parts known as electrons and that electrons are fundamental components of all atoms.

Step-by-step explanation:

J. J. Thomson's cathode ray tube experiment markedly altered the scientific understanding of the atom in two key ways. Firstly, it showed that atoms could be divided into smaller parts known as electrons, effectively proving that atoms were not indivisible as previously thought. This discovery is represented in option B. Secondly, the experiment indicated that these electrons were fundamental components common to all atoms, suggesting a universal aspect of atomic structure across different elements, which is captured in the phrasing of the option that states all atoms contain electrons. However, the experiment did not provide evidence that atoms combine in different proportions (option A), that all atoms of the same element are similar (option C), or that individual atoms could be destroyed (option D).

Answer 2

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).