Atom and Atomic Theory
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Questions and Answers

Democritus proposed the idea that all matter is made up of indivisible particles called atoms.

True

Johan Dalton suggested that elements are made up of tiny divisible particles called atoms.

False

According to Dalton, there are no particles smaller than an atom.

True

Sub-atomic particles like electron, proton, and neutron were discovered at the beginning of the 19th century.

<p>False</p> Signup and view all the answers

The electron was first discovered by M. Faraday, William Crooks, and J.J. Thomson.

<p>True</p> Signup and view all the answers

Chadwick was one of the scientists who identified the proton as a sub-atomic particle.

<p>False</p> Signup and view all the answers

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