Chapter 4: Structure of the Atom

J.J. Thomson

E. Goldstein discovered canal rays, which were positively charged radiations.

Charge: plus one, Mass: approximately 2000 times that of the electron

<p>An electron is represented as 'e–'.</p> Signup and view all the answers

<p>An atom consists of a positively charged sphere and the electrons are embedded in it.</p> Signup and view all the answers

<p>Charge: minus one, Mass: considered to be negligible</p> Signup and view all the answers

<p>The failure of Dalton's atomic theory's aspect of indivisibility and indestructibility of the atom.</p> Signup and view all the answers

<p>What makes the atom of one element different from the atom of another element, and are atoms really indivisible, as proposed by Dalton, or are there smaller constituents inside the atom.</p> Signup and view all the answers

<p>The results of studying static electricity and the condition under which electricity is conducted by different substances.</p> Signup and view all the answers

<p>To reveal the structure of the atom as well as to explain its important properties.</p> Signup and view all the answers

<p>Canal rays</p> Signup and view all the answers

<p>Charge: +1, Mass: approximately 2000 times that of an electron</p> Signup and view all the answers

<p>J.J. Thomson</p> Signup and view all the answers

<p>The atom contained at least one sub-atomic particle – the electron</p> Signup and view all the answers

<p>Discovery of canal rays</p> Signup and view all the answers

<p>The failure of Dalton's atomic theory</p> Signup and view all the answers

<p>Revealing the structure of the atom and explaining its important properties</p> Signup and view all the answers

<p>An atom consists of a positively charged sphere and the electrons are embedded in it</p> Signup and view all the answers

<p>Atoms are indivisible and indestructible</p> Signup and view all the answers

<p>Atoms and molecules are the fundamental building blocks of matter</p> Signup and view all the answers