Atomic Structure and Periodic Table Concepts
Flashcard
•
Chemistry
•
5th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What are the outermost electrons in an atom called?
Back
Valence electrons.
2.
FLASHCARD QUESTION
Front
What is the formula for synthesis in chemical reactions?
Back
a + b = ab.
3.
FLASHCARD QUESTION
Front
What is atomic mass?
Back
Atomic mass is the mass of an atom in atomic mass units (amu).
4.
FLASHCARD QUESTION
Front
Why is the ionization energy of oxygen lower than that of nitrogen?
Back
There is a greater amount of electron shielding in oxygen.
5.
FLASHCARD QUESTION
Front
What is the charge of a proton?
Back
Positive.
6.
FLASHCARD QUESTION
Front
What is the atomic number of an element?
Back
The number of protons in the nucleus of an atom.
7.
FLASHCARD QUESTION
Front
What do we call the vertical columns in the periodic table?
Back
Groups or families.
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