Atomic Structure
Flashcard
•
Chemistry
•
7th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
Most of the mass in an atom is made up of _____________________?
Back
Protons and neutrons.
2.
FLASHCARD QUESTION
Front
The atomic number of an element represents...
Back
The number of protons in the nucleus.
3.
FLASHCARD QUESTION
Front
The element on the second period in group 16 has...
Back
2 energy levels and 6 valence electrons.
4.
FLASHCARD QUESTION
Front
How many valence electrons does an atom of calcium have?
Back
2.
5.
FLASHCARD QUESTION
Front
Which of the following elements would you expect to be most similar to phosphorus in terms of its chemical properties?
Back
Nitrogen.
6.
FLASHCARD QUESTION
Front
What are protons?
Back
Positively charged particles found in the nucleus of an atom.
7.
FLASHCARD QUESTION
Front
What are neutrons?
Back
Neutral particles found in the nucleus of an atom.
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