AnswersPBCSD_Grade_Forgiveness_2003310_Physical Science_S1_2022Changes of State

Ionic Bonds Answers

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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
2
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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.
3

Ionic compounds form

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

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.
6

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
7

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
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 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
10

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

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Ionic Bonds Answers — PBCSD_Grade_Forgiveness_20…