Ionic Bonds Answers

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These diagrams show two atoms of fluorine and an atom of magnesium.

Question illustration
A
A magnesium atom accepts six electrons from the fluorine atoms → Each fluorine atom donates three of the electrons → The magnesium atom becomes a -2 ion → Each fluorine atom becomes a +1 ion
B
A magnesium atom donates two electrons to the fluorine atoms → Each fluorine atom accepts one of the electrons → The magnesium atom becomes a -2 ion → Each fluorine atom becomes a +1 ion
C
A magnesium atom accepts two electrons from the fluorine atoms → Each fluorine atom donates one of the electrons → The magnesium atom becomes a -2 ion → Each fluorine atom becomes a +1 ion
D
A magnesium atom donates two electrons to the fluorine atoms → Each fluorine atom accepts one of the electrons → The magnesium atom becomes a +2 ion → Each fluorine atom becomes a -1 ion
2
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What will most likely occur if sulfur forms an ionic bond with another element? (Click on the icon for the periodic table to view sulfur)

A
Sulfur will accept electrons.
B
Sulfur will donate electrons.
C
Sulfur will become a positive ion.
D
Sulfur will become less stable.
3

Which characteristic(s) makes ionic compounds useful as a building material?

A
low melting and boiling points
B
hardness and brittleness
C
inability to conduct electricity
D
inability to dissolve in water
4

Which two elements will most likely form an ionic bond? (Click on the periodic table icon to view these elements)

A
krypton and lithium
B
magnesium and bromine
C
calcium and potassium
D
iodine and chlorine
5

Chalk is an ionic compound. Which is a property of all ionic compounds that makes chalk particularly useful for writing on a chalkboard?

A
a high melting point
B
hardness and brittleness
C
inability to dissolve in water
D
a multicolored appearance
6

Which shows the correct order of steps during the formation of an ionic bond?

A
Ions are attracted to each other → Electrons are transferred → An ionic compound forms
B
An ionic compound forms → Ions are attracted to each other → Electrons are transferred
C
Electrons are transferred → Ions form → Ions are attracted to each other
D
Ions form → Electrons are transferred → Ions are attracted to each other
7

This chart shows characteristics of three different types of atoms.

Question illustration
A
Atom X will donate electrons to Atom Y.
B
Atom X will accept electrons from Atom Y.
C
Atom Y will accept electrons from Atom Z.
D
Atom Z will donate electrons to Atom X.
8

Which atom is most likely to accept electrons to form an ionic bond?

A
a mercury ion with a negative 2 charge
B
a potassium ion with a negative 1 charge
C
radon, a noble gas with 8 valence electrons
D
sulfur, a nonmetal with 6 valence electrons
9

Which product relies on the ability of ionic compounds to conduct electricity?

A
paper
B
batteries
C
soap
D
glazed pottery
10

Iodine and potassium form an ionic bond. Iodine has seven electrons in its outer shell, and potassium has one electron in its outer shell. Which conclusion is best supported by this information?

A
Iodine is a noble gas.
B
Potassium is a nonmetal.
C
Iodine becomes an ion with a negative 1 charge.
D
Potassium becomes an ion with a positive 7 charge.
11

Ionic compounds form

A
crystal structures.
B
molecular structures.
C
pure elements.
D
neutral elements.
12

Which is an example of a polyatomic ion?

A
H2
B
CO3-
C
Mg+
D
Ne+ -
13

Anna stated that ionic compounds have high melting points and low boiling points. She said that this demonstrates that ionic compounds have strong bonds because a lot of energy is needed to break the electrical forces that hold the bonds together.Which statement best describes Anna’s error?

A
Strong electrical forces will make ionic compounds have high boiling points.
B
Strong electrical forces will make ionic compounds have weak bonds.
C
A low amount of energy is needed to break the bonds in ionic compounds.
D
Gravitational forces hold the bonds together in ionic compounds.
14

David observed properties of four different compounds, only one of which is an ionic compound. His observations are shown in the chart.

Question illustration
A
W
B
X
C
Y
D
Z
15

Alice added sodium chloride to water and stirred the water for several minutes. Alice is most likely trying to demonstrate that ionic compounds

A
are hard.
B
can dissolve.
C
are clear.
D
can melt.

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