AnswersChemistry - SC3210 A-CRTypes of Chemical Bonds

Ionic Bonding Answers

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1
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Which pair of elements will form an ionic bond?

A
N and O
B
K and Br
C
C and Cl
D
Fe and Ni
2
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Which statement indicates that a substance may be an ionic compound?

A
It has a low melting point.
B
It is made up of molecules.
C
It can be flattened by a force.
D
It is made up of a crystal lattice.
3

Which pair of ions can form an ionic bond with each other and why?

A
Cu and Ag; They are both metal ions.
Option A
B
S and O; They have like charges.
Option B
C
Br and At; They are both halogen ions.
Option C
D
Li and Br; They have unlike charges.
Option D
4

Which statement describes a step in the formation of an ionic bond?

A
An attraction occurs between two ions that have the same charge.
B
A metal atom forms a cation, and a nonmetal atom forms an anion.
C
A more electronegative atom transfers electrons to a less electronegative atom.
D
A metal pulls electrons from another metal and produces a force of attraction.
5

Which statement correctly describes the phosphate ion, ?

Question illustration
A
It is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge distributed over the entire ion.
B
It is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge on the phosphorus atom.
C
It is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge distributed over the entire ion.
D
It is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge on the phosphorus atom.
6

Which property best indicates that a compound contains an ionic bond?

A
It is insoluble in water.
B
It can be easily flattened.
C
It has a low boiling point.
D
It conducts electricity when molten.
7

The diagram below shows the atoms involved in forming table salt.Which statement best describes what happens next?

Question illustration
A
Sodium becomes an anion by losing an electron to chlorine.
B
Chlorine becomes a cation by losing an electron to sodium.
C
Sodium becomes a cation by gaining an electron from chlorine.
D
Chlorine becomes an anion by gaining an electron from sodium.
8

Each model shows bonding between a pair of atoms.Model A Model BWhich statement best explains how the models differ?

Question illustration
A
Model A shows the formation of ions, and model B does not show the formation of ions.
B
Model A does not show the formation of ions, and model B shows the sharing of electrons.
C
Model A shows the sharing of electrons, and model B shows the formation of ions.
D
Model A shows the transfer of an electron, and model B shows the sharing of electrons.
9

Which of the following can easily form an ionic bond with a cation?

A
Sr
B
Ne
C
NH4+
D
PO43–
10

Which statement best describes how an ionic bond forms?

A
The transfer of electrons forms strong bonds between ions.
B
The sharing of electrons forms strong bonds between ions.
C
The transfer of electrons results in repulsive forces between molecules.
D
The sharing of electrons results in attractive forces between molecules.

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