5 Questions
Who is credited for adapting Democritus' theory into the first modern atomic model?
John Dalton
Which scientist proposed the theory that matter was made of four elements: earth, fire, water, and air?
Aristotle
Who was the first person to use the term 'atom'?
Democritus
Which scientist is credited for discovering the electron using cathode ray tube technology?
J.J. Thomson
According to John Dalton's atomic model, what are atoms of different elements identical in?
Size, mass, and shape
Test your knowledge of the history of atomic theory with this timeline quiz, covering key scientists and their contributions from Democritus to modern times.
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