Atomic Models and Theories
Flashcard
•
Science
•
9th Grade
•
Practice Problem
•
Hard
Sr Dominica
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32 questions
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1.
FLASHCARD QUESTION
Front
Who arranged the elements on the periodic table based on atomic mass?
Back
Dmitri Mendeleev
2.
FLASHCARD QUESTION
Front
Solid Sphere Model; elements are atoms with different masses
Back
Dalton
3.
FLASHCARD QUESTION
Front
Plum Pudding Model: atom is positive sphere with negatively charged particles evenly embedded throughout
Back
JJ Thomson
4.
FLASHCARD QUESTION
Front
Named the atom based on the Greek word “atomos” meaning indivisible.
Back
Democritus
5.
FLASHCARD QUESTION
Front
Electron Cloud Model: surrounding the nucleus is an electron cloud made of shells, but electrons do not travel in a fixed orbit
Back
Schrodinger and Heisenberg
6.
FLASHCARD QUESTION
Front
Who discovered that the nucleus was the positively charged center of the atom surrounded by negatively charged electrons through the Gold Foil experiment?
Back
Ernest Rutherford
7.
FLASHCARD QUESTION
Front
Discovered neutrons
Back
James Chadwick
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