Chapter 6:
Combining Atoms
Practice Test
1.
What is the term for the attraction of positive ions for negative ions?
a.
ionic bond
b.
ionic compound
c.
ion affinity
d.
ion product
Hint
2.
What information does oxidation number provide about a bonded atom?
a.
the number of electrons in the atom
b.
the number of atoms in each molecule
c.
the number of electrons the atom gains, loses, or shares
d.
the number of oxygen atoms bonded to the atom
Hint
3.
What is the name of the binary compound PbO
2
?
a.
lead(IV) oxide
b.
lead(II) oxide
c.
leaded oxygen
d.
lead(II) oxygen
Hint
4.
What is the oxidation number of Barium in BaSO
4
?
a.
2-
b.
6+
c.
4+
d.
2+
Hint
5.
Which of the following represents a single displacement reaction?
a.
2Al + 3Ag
2
S → Al
2
S
3
+ 6Ag
b.
4Al + 3O
2
→ 2Al
2
O
3
c.
Mg(OH)
2
+ 2HCl → MgCl
2
+ 2H
2
O
d.
H
2
CO
3
→ H
2
O + CO
2
Hint
6.
Carbonic acid producing water and carbon dioxide is an example of what kind of reaction?
a.
decomposition
b.
double displacement
c.
synthesis
d.
single displacement
Hint
7.
What is the chemical formula for iron(II) carbonate?
a.
FeCO
3
b.
FeCO
2
c.
Fe(CO
3
)
2
d.
Fe
2
CO
3
Hint
8.
Which of the following represents a balanced chemical equation?
a.
Ag + H
2
S = Ag
2
S + H
2
b.
2Ag + 2H
2
S = Ag
2
S + 2H
2
c.
Fe(CO
3
)
2
d.
None of the above.
Hint
9.
Why do some atoms tend to form ions?
a.
atoms that gain or lose electrons are less stable
b.
the atoms try to complete their outer electron level
c.
the atoms have too many protons compared to neutrons
d.
All of the above.
Hint
10.
What is the term used for neutral particles formed as a result of atoms sharing electrons?
a.
ionic compounds
b.
neutrons
c.
molecules
d.
covalent bond
Hint
11.
Which of the following represents a balanced equation for the reaction silver nitrate plus sodium chloride produces silver chloride plus sodium nitrate?
a.
AgNO
3
+NaCl → AgCl + NaNO
3
b.
AgNO
2
+ KCl → AgCl + KNO
2
c.
AuNO
3
+ NaCl → AuCl + NaNO
3
d.
AgNO
3
+ 2NaCl → AgCl + NaNO
3
Hint
12.
Which of the following is an example of a synthesis reaction?
a.
4Al + 3O
2
→ 2Al
2
O
3
b.
AgNO
3
+ NaCl → AgCl + NaNO
3
c.
AuNO
3
+ NaCl → AuCl + NaNO
3
d.
All of the above.
Hint
13.
The reaction of an acid and a base to form a salt is an example of what kind of reaction?
a.
single displacement
b.
decomposition
c.
double displacement
d.
synthesis
Hint
14.
How do electrons behave in the metallic bonding of atoms?
a.
the charge of electrons varies from negative to positive
b.
outer electrons move freely from atom to atom
c.
outer electrons are tightly bound to the atom
d.
inner electrons are loosely bound to the atom
Hint
15.
What kind of bond holds together the atoms in a water molecule?
a.
ionic bond
b.
polar covalent
c.
hydrogen bond
d.
nonpolar covalent
Hint
