Chapter 8:
Ionic Compounds
Practice Test
1.
What kind of ion is iodide (I
-
)?
a.
monatomic anion
b.
polyatomic anion
c.
polyatomic cation
d.
monatomic cation
Hint
2.
What is the correct name of Fe
2
O
3
?
a.
iron oxide
b.
iron(III) oxide
c.
iron(II) oxide
d.
iron(I) oxide
Hint
3.
Sulfate (SO
4
2-
) is a ____________.
a.
monatomic anion
b.
polyatomic anion
c.
polyatomic cation
d.
monatomic cation
Hint
4.
Why is the calcium ion (Ca
2+
) more stable than the calcium atom (Ca)?
a.
The two electrons more than the noble gas configuration is more stable.
b.
Eighteen electrons are less stable than twenty electrons.
c.
The noble gas configuration is more stable.
d.
Twenty electrons are more stable than eighteen electrons.
Hint
5.
A binary compound is a ___________.
a.
compound made of three types of atoms
b.
compound made of two types of atoms
c.
compound made of polyatomic ions
d.
compound made of one type of atom
Hint
6.
A positive ion forms when ___________.
a.
an atom gains one or more valence electrons
b.
electrons are pulled into the nucleus
c.
an atom loses one or more valence electrons
d.
electrons are pushed out of the nucleus
Hint
7.
_____________ is the force that holds two atoms together.
a.
Glue
b.
Fission
c.
A chemical bond
d.
Nuclear force
Hint
8.
What is the name given to the simplest ratio of ions in an ionic compound?
a.
formula unit
b.
empirical formula
c.
monatomic ion
d.
mole
Hint
9.
What is a negatively charged ion called?
a.
cation
b.
molecule
c.
anion
d.
nucleus
Hint
10.
Which one of the following classifications of ions contains an error?
a.
magnesium----------Mg
2+
-----monatomic-----cation
b.
ammonium-----NH
4
+
-----polyatomic-----cation
c.
hydroxide-----OH
-
-----monatomic-----anion
d.
carbonate-----CO
3
2-
-----polyatomic-----anion
Hint
11.
What is the charge on a monatomic ion?
a.
reduction number
b.
mass number
c.
oxidation number
d.
Avogadro’s number
Hint
12.
What is the formula for ammonium bromide?
a.
NH
4
Br
2
b.
(NH
4
)
2
Br
c.
NH
4
Br
d.
NH
3
Br
Hint
13.
Which ion has the electron configuration
1s
2
2s
2
2p
6
3s
2
3p
6
?
a.
H
+
b.
F
-
c.
Cl
-
d.
Br
-
Hint
14.
Name the pair that contains an incorrect formula.
a.
aluminum phosphate-----AlPO NH
4
Br
b.
magnesium hydroxide-----Mg(OH) NH
2
Br
c.
iron(II) sulfite-----FeSO NH
3
Br
d.
silver carbonate-----AgCO NH
3
Br
Hint
15.
Which of the following is a correct description of a metallic property?
a.
Metals are malleable.
b.
Metals have a dull appearance.
c.
Metals gain electrons to form anions.
d.
Metals are brittle.
Hint
16.
What is the name of the aqueous solution of H
2
SO
4
?
a.
hydrogen persulfate
b.
sulfurous acid
c.
sulfuric acid
d.
hydrogen persulfide
Hint
17.
Which elements can either gain or lose electrons to form stable octets?
a.
transition metals
b.
metals
c.
nonmetals
d.
metalloids
Hint
18.
Why are metals described as having a “sea of electrons”?
a.
The electrons are free to move between the atoms in a metal.
b.
The electrons move in waves.
c.
The electrons are fixed to a particular metal atom.
d.
The electrons are wet.
Hint
19.
How many ions are produced when one unit of sodium phosphate
(Na
3
PO
4
) dissolves in water?
a.
3
b.
2
c.
8
d.
4
Hint
20.
What forms chemical bonds?
a.
valence electrons
b.
atomic nuclei
c.
inner-level electrons
d.
noble gases
Hint
