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WorksheetsFirst Semester Review
Total questions: 40
Worksheet time: 59mins
Name
Class
Date
1.
A chemical bond involving a transfer of electrons from one atom to another is ________.
a)
Ionic bond
b)
Metallic bond
c)
Covalent bond
d)
Chemical bond
2.
An atom that loses electrons to form an ion is called a(n)
a)
Cation
b)
Anion
c)
Valence
d)
Isotope
3.
An atom that gains electrons to form an ion is called a(n)
a)
Cation
b)
Anion
c)
Valence
d)
Isotope
4.
Lewis electron dot structures include _______.
a)
The atomic symbol
b)
The atomic symbol and all electrons
c)
The atomic symbol and only valence electrons
d)
Electrons and energy levels
5.
Phosphorus has a total of 15 electrons in its electron cloud. How many electrons are found in its second energy level?
a)
3
b)
5
c)
8
d)
15
6.
How many valence electrons does a bromine atom have?
a)
1
b)
2
c)
6
d)
7
7.
Which element is most likely to bond with Na, Sodium?
a)
Li
b)
Fe
c)
S
d)
C
8.
Which element is most likely to bond with Ne, Neon?
a)
Au
b)
O
c)
S
d)
None
9.
Ions are produced through the exchange of _____.
a)
protons
b)
neutrons
c)
electrons
d)
atoms
10.
When most atoms are bonded together, they try to obtain ______ electrons in their outermost shell.
a)
2
b)
8
c)
10
d)
18
11.
An element that would most likely gain electrons in a chemical reaction would be:
a)
Na
b)
Ti
c)
Al
d)
F
12.
An element that would most likely lose electrons in a chemical reaction would be:
a)
N
b)
O
c)
Cl
d)
K
13.
What is the charge of an atom that has lost one electron?
a)
1-
b)
2-
c)
1+
d)
2+
14.
What is the charge of an atom that has gained one electron?
a)
1-
b)
2-
c)
1+
d)
2+
15.
An atom that gains 2 electrons will have _____.
a)
2 less protons
b)
2 more protons
c)
a 2+ electric charge
d)
a 2- electric charge
16.
An atom that loses 3 electrons will have _____.
a)
3 less protons
b)
3 more protons
c)
a 3+ electric charge
d)
a 3- electric charge
17.
If an element has 3 valence electrons, what charge will likely form on its ion ?
a)
3+
b)
5+
c)
3-
d)
5-
18.
If an element has 5 valence electrons, what charge will likely form on its ion ?
a)
3+
b)
5+
c)
3-
d)
5-
19.
A phosphorus atom needs to gain ___ electrons to achieve a full octet.
a)
3
b)
4
c)
6
d)
5
20.
A strontium atom needs to lose ___ electrons to achieve a full octet.
a)
1
b)
2
c)
6
d)
8
21.
Sulfur's Ion
a)
S2-
b)
S2+
c)
S+
d)
S-
22.
Chlorine's Ion
a)
Cl-
b)
Cl+
c)
Cl2-
d)
Cl2+
23.
Sodium's Ion
a)
Na-
b)
Na+
c)
Na2-
d)
Na2+
24.
Aluminum's Ion
a)
Al3+
b)
Al3-
c)
Al+
d)
Al-
25.
How do the following two ions bond together?
Na + and S -2
Na + and S -2
a)
Na2S
b)
NaS2
c)
Na2S2
d)
NaS
26.
How do the following two ions bond together?
K + and N-3
K + and N-3
a)
KN
b)
KN3
c)
K3N3
d)
K3N
27.
How do the following two ions bond together?
Al3+ O2-
Al3+ O2-
a)
AlO
b)
Al2O3
c)
Al3O6
d)
Al3O2
28.
How do the following two ions bond together?
Mg2+ O2-
Mg2+ O2-
a)
MgO
b)
Mg2O2
c)
Mg2O3
d)
Mg2O
29.
What would be the proper chemical formula for combining Al3+ and l- :
a)
Al l3
b)
Al3l
c)
Al l
d)
Al3 l3
30.
The chemical formula for an ionic compound of calcium and chlorine is
a)
CaCl
b)
CaCl2
c)
Ca2Cl
d)
CaCl3
31.
What formula results when Ca+2 and Br- ions bond?
a)
Ca2Br2
b)
CaBr
c)
Ca(br)2
d)
CaBr2
32.
The chemical formula for an ionic compound of lithium and oxygen is
a)
LiO
b)
LiO2
c)
Li2O
d)
Li2O3
33.
The chemical formula for an ionic compound of potassium and iodine is
a)
KI
b)
PI
c)
KI₂
d)
K₂I
34.
The chemical formula for an ionic compound of potassium and oxygen is
a)
KO.
b)
K2O.
c)
K2O2.
d)
KO2.
35.
The chemical formula for an ionic compound of magnesium and phosphorus is
a)
Mg3P2
b)
Mg2P3
c)
Mg2(PO4)3
d)
Mg3(PO4)2
36.
Ions that form a solid out of solution will create a _______.
a)
homogeneous mixture
b)
heterogeneous mixture
c)
solid crystal
d)
solid polymer
37.
Crystal structures are examples of ionic compounds. Which is true of ionic compounds?
a)
conduct electricity
b)
malleable
c)
brittle
d)
ductile
38.
In ionic crystal structures,
a)
like charges attract
b)
opposite charges attract
c)
atoms share electrons
d)
ions combine together to form one atom
39.
Ionic compounds are soluble because,
a)
Ionic compounds have low melting points
b)
Ionic compounds have low melting points
c)
Ionic compounds break apart in water to form aqueous solution
d)
Ionic compounds are not soluble
40.
Who is your chemistry teacher?
a)
Mr. Glass
b)
Mr. Beard
c)
Mr. Diller
d)
Mr. Atchley
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