Question 1

A certain compound has a very high melting point,and when it dissolves in water the solution conducts electricity.Which one of the following compounds would have these properties?

Accepted Answer

A)  O2
B)  Cr
C)  CCl4
D)  Na2SO4
E)  HeF) B) and E)
G) C) and D)

Question 2

Which one of the following is NOT true about elements that form cations?

Accepted Answer

A)  The atoms lose electrons in forming ions.
B)  The elements are metals.
C)  They are located to the left of the periodic table.
D)  They have low ionization energies.
E)  They have high electron affinities.F) B) and D)
G) A) and D)

Question 3

The NO molecule can never satisfy the octet rule.

Accepted Answer

A) True 
 B)False

Question 4

The ionic compound magnesium hydroxide can be found in antacid tablets.What is the formula of magnesium hydroxide?

Accepted Answer

A)  Mg2OH
B)  MgOH2
C)  MgO2H2
D)  Mg(OH) 2
E)  MgOHF) C) and D)
G) D) and E)

Question 5

Which statement is TRUE concerning the solubility of a substance in H2O?

Accepted Answer

A)  Polar and nonpolar substances are equally soluble in water.
B)  A nonpolar substance is soluble in water.
C)  All substances are soluble in water.
D)  Solubility of a substance in water has no relationship to the polarity of the substance being dissolved.
E)  A polar substance is soluble in water.F) B) and E)
G) B) and C)

Question 6

Predict the formula of the compound formed when ions of sodium and sulfur combine.

Accepted Answer

A)  Na2S
B)  NaS2
C)  NaS
D)  Na2S2
E)  Na3SF) A) and B)
G) All of the above

Question 7

As a rule,ionic compounds tend to have lower melting and boiling points than covalent compounds consisting of small molecules.

Accepted Answer

A) True 
 B)False

Question 8

What kind of bond results when electron transfer occurs between atoms of two different elements?

Accepted Answer

A)  ionic
B)  covalent
C)  nonpolar
D)  single
E)  doubleF) D) and E)
G) B) and D)

Question 9

What is the name of the ionic compound with the formula Na3PO4?

Accepted Answer

A)  silver phosphite
B)  sodium phosphorus oxide
C)  trisilver tetraphosphate
D)  trisodium tetraphosphate
E)  sodium phosphateF) A) and D)
G) All of the above

Question 10

What is the molecular geometry of CO2?

Accepted Answer

A)  linear
B)  trigonal planar
C)  angular
D)  trigonal pyramidal
E)  tetrahedralF) A) and B)
G) B) and D)

Question 11

In what region on the periodic table are elements with the lowest electronegativity values found?

Accepted Answer

A)  upper right corner
B)  bottom right corner
C)  upper left corner
D)  bottom left corner
E)  middleF) None of the above
G) A) and B)

Question 12

What kind of bonding exists in substances that consist of discrete molecules?

Accepted Answer

A)  ionic
B)  covalent
C)  hydrogen bonding
D)  intermolecular
E)  polarF) A) and B)
G) A) and E)

Question 13

According to the VSEPR theory,what is the geometry (shape) around the phosphorus atom in the Lewis structure shown below?

Accepted Answer

A)  linear
B)  bent (angular) 
C)  trigonal planar
D)  trigonal pyramidal
E)  tetrahedralF) All of the above
G) A) and D)

Exam 3: Structure and Properties of Ionic and Covalent Compounds

The NO molecule can never satisfy the octet rule.

Correct Answer
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What is the molecular geometry of CO₂?

Correct Answer
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Predict the formula of the compound formed when ions of sodium and sulfur combine.

Correct Answer
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Which statement is TRUE concerning the solubility of a substance in H₂O?

Correct Answer
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What is the name of the ionic compound with the formula Na₃PO₄?

Correct Answer
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What kind of bond results when electron transfer occurs between atoms of two different elements?

Correct Answer
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The ionic compound magnesium hydroxide can be found in antacid tablets.What is the formula of magnesium hydroxide?

Correct Answer
verified

As a rule,ionic compounds tend to have lower melting and boiling points than covalent compounds consisting of small molecules.

Correct Answer
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In what region on the periodic table are elements with the lowest electronegativity values found?

Correct Answer
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A certain compound has a very high melting point,and when it dissolves in water the solution conducts electricity.Which one of the following compounds would have these properties?

Correct Answer
verified

What kind of bonding exists in substances that consist of discrete molecules?

Correct Answer
verified

Which one of the following is NOT true about elements that form cations?

Correct Answer
verified

According to the VSEPR theory,what is the geometry (shape) around the phosphorus atom in the Lewis structure shown below?

Correct Answer
verified

Exam 3: Structure and Properties of Ionic and Covalent Compounds

The NO molecule can never satisfy the octet rule.

Correct AnswerverifiedShow Answer

What is the molecular geometry of CO2?

Correct AnswerverifiedShow Answer

Predict the formula of the compound formed when ions of sodium and sulfur combine.

Correct AnswerverifiedShow Answer

Which statement is TRUE concerning the solubility of a substance in H2O?

Correct AnswerverifiedShow Answer

What is the name of the ionic compound with the formula Na3PO4?

Correct AnswerverifiedShow Answer

What kind of bond results when electron transfer occurs between atoms of two different elements?

Correct AnswerverifiedShow Answer

The ionic compound magnesium hydroxide can be found in antacid tablets.What is the formula of magnesium hydroxide?

Correct AnswerverifiedShow Answer

As a rule,ionic compounds tend to have lower melting and boiling points than covalent compounds consisting of small molecules.

Correct AnswerverifiedShow Answer

In what region on the periodic table are elements with the lowest electronegativity values found?

Correct AnswerverifiedShow Answer

A certain compound has a very high melting point,and when it dissolves in water the solution conducts electricity.Which one of the following compounds would have these properties?

Correct AnswerverifiedShow Answer

What kind of bonding exists in substances that consist of discrete molecules?

Correct AnswerverifiedShow Answer

Which one of the following is NOT true about elements that form cations?

Correct AnswerverifiedShow Answer

According to the VSEPR theory,what is the geometry (shape) around the phosphorus atom in the Lewis structure shown below?

Correct AnswerverifiedShow Answer

Correct Answer
verified

What is the molecular geometry of CO₂?

Correct Answer
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Correct Answer
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Which statement is TRUE concerning the solubility of a substance in H₂O?

Correct Answer
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What is the name of the ionic compound with the formula Na₃PO₄?

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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