Question 1

Which of the following diatomic molecules is joined by a double covalent bond?

Accepted Answer

A)   Cl2 
B)   O2
C)   N2D) A) and B)
E) A) and C)

Question 2

An _____ reaction results when the energy released by the formation of products is greater than the energy required to break the bonds in the reactants.

Accepted Answer

A)   exergonic
B)   endothermic
C)   exothermicD) B) and C)
E) A) and C)

Question 3

Based off molecular polarity determined by VSEPR theory, which of the following would be soluble in methanol?

Accepted Answer

A)   heptane
B)   ethanol
C)   pentaneD) All of the above
E) A) and B)

Question 4

According to periodic trends, which element is the most electronegative?

Accepted Answer

A)   Ne
B)   O
C)   FD) A) and B)
E) None of the above

Question 5

Which of the following molecules has the greatest bond energy?

Accepted Answer

A)   H2
B)   N2
C)   O2D) A) and B)
E) A) and C)

Question 6

Which of the following elements are found in the p-block and can form an octet?

Accepted Answer

A)   He, P, S, As
B)   P, S, O, C
C)   He, Ar, Kr, NeD) All of the above
E) B) and C)

Question 7

A covalent bond is formed when two atoms

Accepted Answer

A)   share an electron with each other.
B)   share one or more pairs of electrons with each other.
C)   gain electrons.D) B) and C)
E) A) and C)

Question 8

The octet rule states that main group elements in the periodic table react to achieve a filled valence shell which consists of how many electrons?

Accepted Answer

A)   2
B)   4
C)   8D) A) and B)
E) All of the above

Question 9

How many electrons are shared in a single covalent bond?

Accepted Answer

A)   2
B)   3
C)   1D) A) and B)
E) A) and C)

Question 10

Which element contains triple covalent bonds?

Accepted Answer

A)   oxygen
B)   nitrogen
C)   iodineD) A) and C)
E) All of the above

Question 11

According to the octet rule, a magnesium atom has a tendency to

Accepted Answer

A)   lose one electron.
B)   lose two electrons.
C)   gain one electron.D) B) and C)
E) A) and B)

Question 12

According to the octet rule, a bromine atom has a tendency to

Accepted Answer

A)   lose one electron.
B)   lose two electrons.
C)   gain one electron.D) None of the above
E) A) and B)

Question 13

How many non-polar bonds does CH3OH contain?

Accepted Answer

A)   2
B)   3
C)   4D) A) and B)
E) A) and C)

Question 14

Why are detergents and soaps good at cleaning up oily stains from dishes or clothing?

Accepted Answer

A)   Detergents and soaps work well to clean up oily messes because they are amphiphilic in nature so they contain both hydrophilic polar)  and hydrophobic non-polar)  ends. The hydrophobic end attaches to oils via hydrogen bonds creating micelles which leave the hydrophilic part exposed and can be washed away by water.
B)   Detergents and soaps work well to clean up oily messes because they are amphiphilic in nature so they contain both hydrophilic non-polar)  and hydrophobic polar)  ends. The hydrophobic end attaches to oils via London forces creating micelles which leave the hydrophilic part exposed and can be washed away by water.
C)   Detergents and soaps work well to clean up oily messes because they are amphiphilic in nature so they contain both hydrophilic polar)  and hydrophobic non-polar)  ends. The hydrophobic end attaches to oils via London forces creating micelles which leave the hydrophilic part exposed and can be washed away by water.D) B) and C)
E) All of the above

Question 15

Which compound has only ionic bonds?  Paired item 1)

Accepted Answer

A)   CO2
B)   Al2O3
C)   H2O2D) B) and C)
E) A) and C)

Question 16

How many polar bonds does CCl4 have in its structure?

Accepted Answer

A)   0
B)   2
C)   4D) None of the above
E) B) and C)

Question 17

Which statement best describes a bond forming between fluorine and iodine?

Accepted Answer

A)   fluorine and iodine are in the same group so the electron density in the bond is equaling shared giving rise to a non-polar bond
B)   fluorine is more electronegative than iodine so it will attract the electron density in the bond giving rise to a polar bond
C)   fluorine is less electronegative than iodine so it will attract the electron density in the bond giving rise to a polar bondD) A) and B)
E) B) and C)

Question 18

According to the octet rule, which of elements will have a tendency to loss 2 electrons?

Accepted Answer

A)   strontium
B)   oxygen
C)   cesiumD) All of the above
E) B) and C)

Question 19

What is the molecular shape of CO2?

Accepted Answer

A)   linear
B)   bent
C)   trigonal planarD) None of the above
E) All of the above

Question 20

Based off periodic trends, which of the following has the strongest lattice energy?

Accepted Answer

A)   aluminum chloride
B)   calcium chloride
C)   sodium chlorideD) A) and B)
E) None of the above

Exam 7: Chemical Bonding and Molecular Geometry

What is the molecular shape of CO2?

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An _____ reaction results when the energy released by the formation of products is greater than the energy required to break the bonds in the reactants.

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Why are detergents and soaps good at cleaning up oily stains from dishes or clothing?

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According to the octet rule, a magnesium atom has a tendency to

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How many electrons are shared in a single covalent bond?

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According to periodic trends, which element is the most electronegative?

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A covalent bond is formed when two atoms

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How many non-polar bonds does CH3OH contain?

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Which of the following molecules has the greatest bond energy?

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How many polar bonds does CCl4 have in its structure?

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Which element contains triple covalent bonds?

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Which compound has only ionic bonds? Paired item 1)

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Based off molecular polarity determined by VSEPR theory, which of the following would be soluble in methanol?

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Which of the following diatomic molecules is joined by a double covalent bond?

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Which statement best describes a bond forming between fluorine and iodine?

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Which of the following elements are found in the p-block and can form an octet?

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According to the octet rule, which of elements will have a tendency to loss 2 electrons?

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According to the octet rule, a bromine atom has a tendency to

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Based off periodic trends, which of the following has the strongest lattice energy?

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The octet rule states that main group elements in the periodic table react to achieve a filled valence shell which consists of how many electrons?

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What is the molecular shape of CO₂?

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How many non-polar bonds does CH₃OH contain?

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How many polar bonds does CCl₄have in its structure?

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