Chapter 8:
Ionic Compounds
Practice Test
1.
How are ionic bonds formed?
a.
gain of electrons by atoms
b.
sharing of electrons between atoms
c.
loss of electrons by atoms
d.
electrostatic forces between ions
Hint
2.
Which ion has the electron configuration
1s
2
2s
2
2p
6
3s
2
3p
6
?
a.
Br
-
b.
Cl
-
c.
H
+
d.
F
-
Hint
3.
Which one of the following classifications of ions contains an error?
a.
hydroxide-----OH
-
-----monatomic-----anion
b.
carbonate-----CO
3
2-
-----polyatomic-----anion
c.
ammonium-----NH
4
+
-----polyatomic-----cation
d.
magnesium----------Mg
2+
-----monatomic-----cation
Hint
4.
_____________ is the force that holds two atoms together.
a.
A chemical bond
b.
Glue
c.
Nuclear force
d.
Fission
Hint
5.
Sulfate (SO
4
2-
) is a ____________.
a.
polyatomic cation
b.
monatomic anion
c.
monatomic cation
d.
polyatomic anion
Hint
6.
A positive ion forms when ___________.
a.
an atom gains one or more valence electrons
b.
an atom loses one or more valence electrons
c.
electrons are pulled into the nucleus
d.
electrons are pushed out of the nucleus
Hint
7.
What is the formula for ammonium bromide?
a.
NH
4
Br
2
b.
NH
3
Br
c.
NH
4
Br
d.
(NH
4
)
2
Br
Hint
8.
A binary compound is a ___________.
a.
compound made of two types of atoms
b.
compound made of polyatomic ions
c.
compound made of one type of atom
d.
compound made of three types of atoms
Hint
9.
What is a negatively charged ion called?
a.
cation
b.
molecule
c.
nucleus
d.
anion
Hint
10.
What is the charge on a monatomic ion?
a.
mass number
b.
Avogadro’s number
c.
oxidation number
d.
reduction number
Hint
11.
How many electrons are present in the valence level for all noble gases except helium?
a.
9
b.
7
c.
6
d.
8
Hint
12.
What is the name given to the simplest ratio of ions in an ionic compound?
a.
mole
b.
monatomic ion
c.
empirical formula
d.
formula unit
Hint
13.
What is the name of the aqueous solution of H
2
SO
4
?
a.
hydrogen persulfate
b.
sulfurous acid
c.
hydrogen persulfide
d.
sulfuric acid
Hint
14.
Why is the calcium ion (Ca
2+
) more stable than the calcium atom (Ca)?
a.
The noble gas configuration is more stable.
b.
Eighteen electrons are less stable than twenty electrons.
c.
The two electrons more than the noble gas configuration is more stable.
d.
Twenty electrons are more stable than eighteen electrons.
Hint
15.
What forms chemical bonds?
a.
atomic nuclei
b.
noble gases
c.
inner-level electrons
d.
valence electrons
Hint
16.
Which elements can either gain or lose electrons to form stable octets?
a.
transition metals
b.
nonmetals
c.
metalloids
d.
metals
Hint
17.
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 are fixed to a particular metal atom.
c.
The electrons are wet.
d.
The electrons move in waves.
Hint
18.
Which of the following is a mixture of elements that has metallic properties?
a.
an alloy
b.
a suspension
c.
a gas
d.
a pure metal
Hint
19.
What kind of ion is iodide (I
-
)?
a.
monatomic cation
b.
polyatomic cation
c.
polyatomic anion
d.
monatomic anion
Hint
20.
What is the name given to the energy required to separate one mole of the ions of an ionic compound?
a.
heat energy
b.
kinetic energy
c.
potential energy
d.
lattice energy
Hint
