Ionic Compounds
Practice Test
1.
What is the symbol of the element that has the following electron configuration? 1s
2
2s
2
2px
2
2py
2
2pz
2
3s
2
3px
2
3py
2
3pz
1
a.
Cl
b.
S
c.
P
d.
Si
2.
Atoms that lose electrons to form positive ions are __________.
SC.A.2.4.5
a.
noble gases
b.
nonmetals
c.
metals
d.
metalloids
3.
Which one of the following elements is unreactive enough to be found uncombined in nature?
a.
gold
b.
calcium
c.
iron
d.
aluminum
4.
Which of the following is a correct description of a metallic property?
SC.A.2.4.5
a.
Metals are brittle.
b.
Metals have a dull appearance.
c.
Metals are malleable.
d.
Metals gain electrons to form anions.
5.
The ionic compound, sodium chloride, is formed from atoms of the elements sodium and chlorine. What happens to the size of each atom when it forms an ion?
SC.A.1.4.5
a.
Sodium increases in size and chlorine increases in size.
b.
Sodium decreases in size and chlorine decreases in size.
c.
Sodium increases in size and chlorine decreases in size.
d.
Sodium decreases in size and chlorine increases in size.
6.
What is a negatively charged ion called?
a.
nucleus
b.
molecule
c.
anion
d.
cation
7.
Elements in the d block are also known as _______________.
SC.A.2.4.5
a.
alkaline earth metals
b.
transition metals
c.
lanthanide metals
d.
alkali metals
8.
How are ionic bonds formed?
SC.A.1.4.5
a.
sharing of electrons between atoms
b.
loss of electrons by atoms
c.
electrostatic forces between ions
d.
gain of electrons by atoms
9.
What is the correct name of Fe
2
O
3
?
a.
iron
III
oxide
b.
iron
I
oxide
c.
iron oxide
d.
iron
II
oxide
10.
Magnesium has more properties in common with aluminum than with calcium. What kind of relationship is demonstrated between these two elements?
SC.A.2.4.5
a.
vertical relationship
b.
horizontal relationship
c.
diagonal relationship
d.
periodic relationship
11.
For which trace element in the table is the recommended daily allowance lowest?
Supplement Contents
Per Tablet
Element
Amount
% DV
Calcium
161 mg
16%
Chromium
25 µg
20%
Copper
2 mg
100%
Iodine
150 µg
100%
Manganese
2.5 mg
125%
Magnesium
100 mg
25%
Molybdenum
25 µg
33%
Phosphorus
09 mg
111%
Potassium
40 mg
1%
Selenium
20 µg
28%
Zinc
15 mg
100%
a.
molybdenum
b.
copper
c.
selenium
d.
calcium
12.
Halogens are good disinfectants. Which of the following is a halogen?
SC.A.2.4.5
a.
Cl
b.
Fe
c.
N
d.
O
13.
Elements in group 7A are __________.
SC.A.2.4.5
a.
alkaline earth metals
b.
noble gases
c.
halogens
d.
alkali metals
14.
What kind of ion is iodide I
-
?
a.
polyatomic cation
b.
polyatomic anion
c.
monatomic cation
d.
monatomic anion
15.
A lack of _______ can cause the thyroid gland to enlarge.
SC.F.1.4.1
a.
chlorine
b.
bromine
c.
fluorine
d.
iodine
16.
Why are metals described as having a sea of electrons?
SC.A.2.4.5
a.
The electrons are wet.
b.
The electrons are free to move between the atoms in a metal.
c.
The electrons are fixed to a particular metal atom.
d.
The electrons move in waves.
17.
Which group on the periodic table is known as the halogens?
SC.A.2.4.5
a.
group 1A
b.
group 8A
c.
group 7A
d.
group 2A
18.
Which metal is the lightest?
SC.A.2.4.5
a.
magnesium
b.
boron
c.
aluminum
d.
lithium
19.
Which of these is the electron configuration of an atom most likely to gain an electron?
a.
1s
2
2s
2
2p
6
3s
1
b.
1s
2
2s
2
2p
6
3s
2
3p
6
4s
1
c.
1s
2
2s
2
2p
6
d.
1s
2
2s
2
2p
6
3s
2
3p
5
20.
Which block consists of the elements in groups 3A through 8A?
SC.a.2.4.5
a.
f block
b.
d block
c.
p block
d.
s block
21.
Which ion has the electron configuration 1s
2
2s
2
2p
6
3s
2
3p
6
?
a.
H
+
b.
Cl
-
c.
Br
-
d.
F
-
22.
How many valence electrons does a group 1A metal atom have?
SC.A.2.4.5
a.
4
b.
1
c.
2
d.
3
