Atomic History

Flashcard
•
Chemistry
•
10th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
Who performed the Cathode Ray Experiment?
Back
J.J. Thomson
2.
FLASHCARD QUESTION
Front
What does the continuous updating of the atomic model indicate?
Back
New information about atoms continues to be discovered.
3.
FLASHCARD QUESTION
Front
In the 'plum pudding' model, what do the plums represent?
Back
The electrons.
4.
FLASHCARD QUESTION
Front
Who proposed that electrons orbit the nucleus on fixed paths?
Back
Niels Bohr.
5.
FLASHCARD QUESTION
Front
Who was the first to propose the discovery of the nucleus?
Back
Ernest Rutherford.
6.
FLASHCARD QUESTION
Front
What is the main idea of the atomic theory?
Back
Matter is composed of atoms, which are indivisible and indestructible.
7.
FLASHCARD QUESTION
Front
What did Democritus contribute to atomic theory?
Back
He proposed that everything is made up of atoms, which are small, indivisible particles.
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