Chemistry
Answer
Discovery of sub-atomic particles i.e., electrons, protons and neutrons shows that atoms are divisible.
In discharge tube experiment, Goldstein noticed, set of rays travelling in a direction opposite to that of the cathode rays. These were called canal rays since these rays passed through the holes or canals in the cathode. These rays were named positive rays or anode rays. These rays consist of sub-atomic particle proton.
Related Questions
How do cathode rays differ from anode rays?
On the basis of Thomson's model of an atom, explain how an atom as a whole is neutral.
(a) Name an element which does not contain neutron.
(b) If an atom contains one electron and one proton, will it carry any charge or not?
Why were anode rays also called as 'canal rays'?