Atomic Theory and Atomic Structure
Flashcard
•
Chemistry
•
9th - 12th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
Subatomic particles that are neutral in charge
Back
Neutrons
2.
FLASHCARD QUESTION
Front
A tiny but very dense, positively charged portion of the atom that holds most of the atomic mass
Back
Nucleus
3.
FLASHCARD QUESTION
Front
An atom has an atomic number of 15 and a mass number of 31. How many protons are there in the atom?
Back
15
4.
FLASHCARD QUESTION
Front
Rutherford's 'gold-foil' experiment using alpha particle scattering concluded that
Back
most of the atom is empty
5.
FLASHCARD QUESTION
Front
What does the 6 represent?
Back
atomic number
6.
FLASHCARD QUESTION
Front
The center of an atom is called?
Back
Nucleus
7.
FLASHCARD QUESTION
Front
What are the negatively charged subatomic particles called?
Back
Electrons
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