AnswersIA-Chemistry A Survey of Chemistry AUnit Test

Ionic Bonding Answers

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Which of these best describes an ionic bond?

A
a force that keeps two large molecules together
B
an attraction that occurs between two nonmetals
C
a force that holds two oppositely charged ions together
D
an electromagnetic attraction that occurs between two metals
2
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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.
3

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
4

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.
5

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
6

Which statement is true about a polyatomic ion?

A
It forms metallic bonds with other ions.
B
It forms covalent bonds with other ions.
C
It is made of atoms that are covalently bonded together.
D
It has a charge that is distributed over only part of the ion.
7

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.
8

Which statement is true about ionic compounds?

A
They are made up of many large molecules that are bonded together.
B
They are made up of atoms of only one type of element.
C
They are made up of particles that are arranged in a repeating pattern.
D
They are made up of a random ratio of elements that are bonded together.
9

The table lists the lattice energies of some compounds.CompoundLattice Energy (kJ/mol)LiF –1,036LiCl –853NaF –923KF –821NaCl –786Which statement about crystal lattice energy is best supported by the information in the table?

A
The lattice energy increases as cations get smaller, as shown by LiF and KF.
B
The lattice energy increases as the cations get larger, as shown by LiF and LiCl.
C
The lattice energy decreases as cations get smaller, as shown by NaCl and NaF.
D
The lattice energy decreases as the cations get smaller, as shown by NaF and KF.
10

Which property is best to use when determining the strength of an ionic bond in a solid?

A
lattice energy
B
conductivity
C
hardness
D
solubility

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Ionic Bonding Answers — IA-Chemistry A Survey of…