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Unit One Physical Science Review Flashcards | StudBud
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Unit One Physical Science Review
Unit One Physical Science Review
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Questions over the periodic table and valence electrons.
Flashcards
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Questions
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Answers
1
What element is shown in the picture?
Flourine
Carbon
Silicon
Aluminum
2
Argon (Ar) is a....
Metal
Transition
Noble Gas
Halogen
3
What is the name of the group we ignore because they do not follow the valence electron and energy level rules?
noble gases
alkali metals
transition elements
halogens
4
What element is pictured?
Chlorine
Neon
Argon
Lithium
5
What makes an ion a cation (positive ion)?
gaining neutrons in the nucleus
gaining valence electrons
losing valence electrons
losing neutrons from the nucleus
6
How many valence electrons would atoms of the element sodium (Na) have?
2
4
3
1
7
Nonmetals usually form anions (negative ions).
True
False
8
All elements want to have an empty valence (outer shell)
True
False
9
Of the elements N, O, Cl, Na, and S, which two would likely have similar chemical properties?
Chlorine and Sulfur
Sulfur and Nitrogen
Oxygen and Sulfur
Oxygen and Nitrogen
10
How many valence electrons does Helium (He) have?
8
1
0
2
11
What element is this?
Flourine
Magnesium
Carbon
Nitrogen
12
Magnesium (Mg) forms which ion?
Mg+
Mg-
Mg2+
Mg²⁻
13
How many valence electrons does Neon (Ne) have?
8
10
2
18
14
What is so special about the elements of group 8 on the periodic table?
they all have the same amount of protons
they all have the same number of neutrons
they have the most stability due to full valence shell
they're the most reactive elements on the periodic table
15
How do you determine the number of energy levels an atom will have?
the element's period number
the element's group number
if it's a metal or nonmetal
the number of energy levels changes, there is no way to determine
16
How many valence electrons would atoms of the element boron (B) have?
5
7
3
1
17
Which elements are likely to be the least reactive, based on the number of valence electrons?
Halogens
Noble gases
Period 1
Alkali Metals
18
How many energy levels does Phosphorus (P) have?
5
1
3
2
19
What period is Chlorine (Cl) in?
2
3
1
4
20
What is the first element in Group 2?
Berylium
Helium
Lithium
Potassium
