Chemistry 1- Exam 1- Scientists and Their Discoveries
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13 Terms
Who first came up with the term “atomos”, later called “atom”?
Democritus
This person is responsible for first coming up with the concept of the atom, but did so without experimentation:
Democritus
____ ______ came up with Atomic Theory.
John Dalton
The limitation to John Dalton’s Atomic Theory was:
He didn’t talk about particles.
Who developed the Plum Pudding Model of the Atom?
J.J. Thomsom
Who conducted the Cathode Ray Tube Experiment?
J.J. Thomson
Which scientist discovered the electron?
J.J. Thomson
What did J.J. Thomson determine about atoms?
Atoms are mostly empty space.
Ernest Rutherford conducted the _____________ Experiment and discovered the _______.
Gold Foil, nucleus
Who came up with the Nuclear Model of the Atom?
Ernest Rutherford
What was the limitation for Ernest Rutherford’s theory?
He couldn’t explain why electrons were attracted to protons.
Who conducted the Oil Drop Experiment?
Millikan
What did Millikan discover?
The charge of electrons.