10 Questions
Which sub-atomic particle was discovered by J.J. Thomson?
Electron
What is the mass of an electron compared to that of a proton?
Approximately 2000 times less
Who discovered the presence of canal rays in a gas discharge?
E. Goldstein
What type of radiations were discovered by E. Goldstein in a gas discharge?
Positively charged radiations
What is the charge of a proton?
Plus one
What was the major challenge faced by scientists at the end of the 19th century?
To reveal the structure of the atom and explain its important properties
Which scientist was the first to propose a model for the structure of an atom?
J.J. Thomson
What did Dalton's atomic theory suggest about the atom?
That it was indivisible and indestructible
What did J.J. Thomson propose about the structure of an atom?
An atom consists of a positively charged sphere and the electrons are embedded in it
What led to the failure of one aspect of Dalton’s atomic theory?
The discovery of two fundamental particles (electrons and protons) inside the atom
Test your knowledge about the structure of the atom and the concept of electrical charge in this quiz. Explore the contributions of scientists in revealing the presence of charged particles in an atom.
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