Atomic Theory Scientists
Flashcard
•
Chemistry
•
10th - 12th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the charge and density of the nucleus of an atom?
Back
The nucleus of an atom is dense and positively charged.
2.
FLASHCARD QUESTION
Front
Who proposed the 'plum pudding' model of the atom?
Back
JJ Thomson proposed the 'plum pudding' model.
3.
FLASHCARD QUESTION
Front
What device did JJ Thomson use to discover the negative charge of electrons?
Back
JJ Thomson used the cathode ray tube to discover the negative charge.
4.
FLASHCARD QUESTION
Front
Who described atoms as solid hard particles that are constantly moving and exist in different sizes and shapes?
Back
Democritus described atoms as solid hard particles that are constantly moving.
5.
FLASHCARD QUESTION
Front
Which model of the atom is associated with Schrodinger?
Back
The Electron Cloud Model is associated with Schrodinger.
6.
FLASHCARD QUESTION
Front
What is the main contribution of Ernest Rutherford to atomic theory?
Back
Ernest Rutherford proposed the nuclear model of the atom, showing that atoms have a dense nucleus.
7.
FLASHCARD QUESTION
Front
What did Niels Bohr contribute to atomic theory?
Back
Niels Bohr proposed that electrons orbit the nucleus in fixed paths or energy levels.
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