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Understanding Electrons Review
By Amanda Jones
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Last updated about 7 years ago
21 questions
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Question 1
1.
The _____ of an element is determined by the NUMBER of PROTONS in its atom.
Question 2
2.
The number of protons equals the _____________.
Question 3
3.
Electrons are found flying around in the _________.
Question 4
4.
Electrons have a ___________ charge.
Question 5
5.
Electrons have _______ mass than protons and neutrons.
Question 6
6.
Electrons are arranged around the nucleus into ____________
Question 7
7.
the 1st Energy Level holds up to
8 electrons
4 electrons
2 electrons
18 electrons
Question 8
8.
the 2nd Energy Level holds up to
8 electrons
4 electrons
2 electrons
18 electrons
Question 9
9.
the 2nd Energy Level holds up to
8 electrons
4 electrons
2 electrons
Question 10
10.
___________ electrons are the electrons in the outer energy level.
Question 11
11.
Valence electrons determine an element's ___________.
Question 12
12.
Elements in the same period have the same
number of valence electrons
number of energy levels
chemical properties
Question 13
13.
Elements in the same group have the same
number of valence electrons
number of energy levels
luster
Question 14
14.
Question 15
15.
Question 16
16.
Question 17
17.
Question 18
18.
Question 19
19.
Question 20
20.
Question 21
21.
Carbon has _____ valence electrons.
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2
3
4
5
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8
Krypton has _____ valence electrons.
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2
3
4
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7
8
Calcium has _____ valence electrons.
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2
3
4
5
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8
Aluminum has _____ valence electrons.
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2
3
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8
Nitrogen has _____ valence electrons.
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2
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7
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Sulfur has _____ valence electrons.
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2
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7
8
Iodine has _____ valence electrons.
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2
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8
Oxygen has _____ valence electrons.
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2
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