6 Questions
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.
False
The electron was first discovered by M. Faraday, William Crooks, and J.J. Thomson.
True
Chadwick was one of the scientists who identified the proton as a sub-atomic particle.
False
Learn about the concept of atoms and the atomic theory proposed by Democritus and John Dalton. Understand the idea that all matter is composed of tiny indivisible particles known as atoms.
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