What is the main idea of John Dalton's atomic theory?
Atomic Theory History

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Chemistry
•
11th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
John Dalton's atomic theory states that matter is made up of indivisible atoms, which are the smallest units of matter, and that atoms of the same element are identical in mass and properties.
2.
FLASHCARD QUESTION
Front
True or False? John Dalton believed that atoms could be divided into smaller particles.
Back
False
3.
FLASHCARD QUESTION
Front
Who proposed the 'plum pudding' model of the atom?
Back
J.J. Thomson proposed the 'plum pudding' model of the atom.
4.
FLASHCARD QUESTION
Front
What did J.J. Thomson discover about the atom?
Back
J.J. Thomson discovered the electron, a negatively charged particle within the atom.
5.
FLASHCARD QUESTION
Front
What is the significance of Democritus in atomic theory?
Back
Democritus is known as the first person to propose the idea of atoms as the fundamental building blocks of matter.
6.
FLASHCARD QUESTION
Front
What does the Bohr model of the atom suggest about electron movement?
Back
The Bohr model suggests that electrons travel around the nucleus of an atom in fixed orbits or definite paths.
7.
FLASHCARD QUESTION
Front
What are the four classical elements proposed by Aristotle?
Back
The four classical elements proposed by Aristotle are Earth, Air, Fire, and Water.
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