Question 1

The concept of a chemical bond is ________.

Accepted Answer

A) how two or more atoms are held together 
B) the sharing of nucleons 
C) how two or more electrons reside in an orbital 
D) how much energy it takes to remove an electron from a set of atoms 
E) none of the above 
A) how two or more atoms are held together 
B) the sharing of nucleons 
C) how two or more electrons reside in an orbital 
D) how much energy it takes to remove an electron from a set of atoms 
E) none of the above

Question 2

Which of the following statements best describes a relatively polar covalent bond?

Accepted Answer

A) a very electronegative atom and a weakly electronegative atom are covalently bound 
B) two very electronegative atoms are covalently bound 
C) two very electronegative atoms undergo ionic bonding 
D) two weakly electronegative atoms undergo ionic bonding 
E) none of the above 
A) a very electronegative atom and a weakly electronegative atom are covalently bound 
B) two very electronegative atoms are covalently bound 
C) two very electronegative atoms undergo ionic bonding 
D) two weakly electronegative atoms undergo ionic bonding 
E) none of the above

Question 3

Which of the following is a covalent compound composed of nonpolar covalent bonds?

Accepted Answer

A)    
B)    O 
C)    
D) NaF 
A)    
B)    O 
C)    
D) NaF

Question 4

How many electrons are used to draw the electron-dot structure for hydrogen peroxide, a covalent compound with the formula

Accepted Answer

A) 4 
B) 7 
C) 8 
D) 14 
A) 4 
B) 7 
C) 8 
D) 14

Question 5

If the following generic atom were to undergo ionization, what would be the charge of the most likely product?

Accepted Answer

A) +2 
B) -2 
C) -6 
D) +6 
E) would probably not ionize 
A) +2 
B) -2 
C) -6 
D) +6 
E) would probably not ionize

Question 6

Which of the following molecules has two pairs of nonbonding electrons on the central atom?

Accepted Answer

A)    
B)    
C)    O 
D)    S 
E) C and D 
A)    
B)    
C)    O 
D)    S 
E) C and D

Question 7

Which of the following molecules has the highest boiling point?

Accepted Answer

A) BH3 
B) NH3 
C) CH4 
D) SH2 
E) All of the above have the same boiling point. 
A) BH3 
B) NH3 
C) CH4 
D) SH2 
E) All of the above have the same boiling point.

Question 8

Which of the following is the correct electron dot structure for chlorine (atomic no. = 17)?

Accepted Answer

A) a 
B) b 
C) c 
D) d 
E) e 
A) a 
B) b 
C) c 
D) d 
E) e

Question 9

How is it possible for a neutral molecule, such as water, to form an ion?

Accepted Answer

A) It can combine with a hydrogen ion to form a positively charged species. 
B) It can combine with a chloride ion to form a negatively charged species. 
C) It can fragment into protons and electrons. 
D) It can absorb electrons and become negatively charged. 
E) It can absorb electrons and become positively charged. 
A) It can combine with a hydrogen ion to form a positively charged species. 
B) It can combine with a chloride ion to form a negatively charged species. 
C) It can fragment into protons and electrons. 
D) It can absorb electrons and become negatively charged. 
E) It can absorb electrons and become positively charged.

Question 10

Why does an atom with many valence electrons tend to gain electrons rather than lose any?

Accepted Answer

A) Atoms with many valence electrons tend to have relatively weak forces of attraction between the valence electrons and the nucleus. Therefore, the outer electrons are free to attract other electrons. 
B) There is stability in numbers. Atoms with many valence electrons are always attracting new electrons. 
C) The old adage that "he who has, gets" is also true in atomic structure. Atoms with many valence electrons can essentially overpower atoms with few valence electrons and attract additional electrons. 
D) Atoms with many valence electrons tend to have relatively strong forces of attraction between the valence electrons and the nucleus. This makes it easy for them to gain additional electrons. 
A) Atoms with many valence electrons tend to have relatively weak forces of attraction between the valence electrons and the nucleus. Therefore, the outer electrons are free to attract other electrons. 
B) There is stability in numbers. Atoms with many valence electrons are always attracting new electrons. 
C) The old adage that "he who has, gets" is also true in atomic structure. Atoms with many valence electrons can essentially overpower atoms with few valence electrons and attract additional electrons. 
D) Atoms with many valence electrons tend to have relatively strong forces of attraction between the valence electrons and the nucleus. This makes it easy for them to gain additional electrons.

Question 11

Which of the following compounds contains ionic bonds?

Accepted Answer

A)    
B)    O 
C)    
D)    
E) none of the above 
A)    
B)    O 
C)    
D)    
E) none of the above

Question 12

Which of the following statements is true?

Accepted Answer

A) The valence shell is the innermost shell. 
B) The valence shell is usually the most unreactive shell. 
C) The valence shell gives us the electron dot structure. 
D) The electron dot structure is made up of each of the valence shells. 
E) none of the above 
A) The valence shell is the innermost shell. 
B) The valence shell is usually the most unreactive shell. 
C) The valence shell gives us the electron dot structure. 
D) The electron dot structure is made up of each of the valence shells. 
E) none of the above

Question 13

Is an ionic compound an example of a chemical compound, or is a chemical compound an example of an ionic compound?

Accepted Answer

A) An chemical compound is an example of a ionic compound. 
B) Neither is an example of the other. 
C) Each is an example of the other. 
D) An ionic compound is an example of a chemical compound. 
A) An chemical compound is an example of a ionic compound. 
B) Neither is an example of the other. 
C) Each is an example of the other. 
D) An ionic compound is an example of a chemical compound.

Question 14

If all the molecules of a body remained part of that body, would the body have any odor?

Accepted Answer

A) Yes, but only if that body is sweating. 
B) No, because there would be no molecules traveling to our nose. 
C) Yes, because it would still release photons. 
D) No, because it would no longer be what it was. 
A) Yes, but only if that body is sweating. 
B) No, because there would be no molecules traveling to our nose. 
C) Yes, because it would still release photons. 
D) No, because it would no longer be what it was.

Question 15

The number of nonbonding pairs in the water molecule is ________.

Accepted Answer

A) one 
B) two 
C) three 
D) four 
A) one 
B) two 
C) three 
D) four

Question 16

Which of the following would be an ion with a double positive charge?

Accepted Answer

A) an Mg atom that gains two electrons 
B) an Mg atom that gains one electron 
C) an Mg atom that loses two electrons 
D) an Mg atom that loses one electron 
E) none of the above 
A) an Mg atom that gains two electrons 
B) an Mg atom that gains one electron 
C) an Mg atom that loses two electrons 
D) an Mg atom that loses one electron 
E) none of the above

Question 17

What is the molecular shape of the following molecule?

Accepted Answer

A) pyramidal 
B) bent 
C) tetrahedral 
D) T-shaped 
E) linear 
A) pyramidal 
B) bent 
C) tetrahedral 
D) T-shaped 
E) linear

Question 18

Many of the macroscopic properties of a compound depend on ________.

Accepted Answer

A) how the atoms of the molecules are held together 
B) the mass of the constituent atoms 
C) the number of nucleons present in the sample 
D) the size of the sample 
E) how the atoms absorb light and the shape of the orbitals 
A) how the atoms of the molecules are held together 
B) the mass of the constituent atoms 
C) the number of nucleons present in the sample 
D) the size of the sample 
E) how the atoms absorb light and the shape of the orbitals

Question 19

True or False: Atoms with the greatest electronegativity are those with the fewest number of shells, but only when the number of valence electrons is the same. Explain.

Accepted Answer

A) False; Electronegativity increases with an increasing number of shells down any given atomic group (vertical column). 
B) True; Except for the noble gas elements, electronegativity decreases with an increasing number of shells down any one atomic group (vertical column). 
C) False; There is no direct correlation between electronegativity value and the number of shells in an atom. 
D) True; except for the noble gas elements and the Lanthanide and Actinide Series elements 
A) False; Electronegativity increases with an increasing number of shells down any given atomic group (vertical column). 
B) True; Except for the noble gas elements, electronegativity decreases with an increasing number of shells down any one atomic group (vertical column). 
C) False; There is no direct correlation between electronegativity value and the number of shells in an atom. 
D) True; except for the noble gas elements and the Lanthanide and Actinide Series elements

Question 20

Which of the following elements will most likely not form an ion at all?

Accepted Answer

A) Na 
B) O 
C) Ar 
D) Mg 
E) Br 
A) Na 
B) O 
C) Ar 
D) Mg 
E) Br

The concept of a chemical bond is ________.

Which of the following statements best describes a relatively polar covalent bond?

Which of the following is a covalent compound composed of nonpolar covalent bonds?

How many electrons are used to draw the electron-dot structure for hydrogen peroxide, a covalent compound with the formula

If the following generic atom were to undergo ionization, what would be the charge of the most likely product?

Which of the following molecules has two pairs of nonbonding electrons on the central atom?

Which of the following molecules has the highest boiling point?

Which of the following is the correct electron dot structure for chlorine (atomic no. = 17)?

How is it possible for a neutral molecule, such as water, to form an ion?

Why does an atom with many valence electrons tend to gain electrons rather than lose any?

Which of the following compounds contains ionic bonds?

Which of the following statements is true?

Is an ionic compound an example of a chemical compound, or is a chemical compound an example of an ionic compound?

If all the molecules of a body remained part of that body, would the body have any odor?

The number of nonbonding pairs in the water molecule is ________.

Which of the following would be an ion with a double positive charge?

What is the molecular shape of the following molecule?

Many of the macroscopic properties of a compound depend on ________.

True or False: Atoms with the greatest electronegativity are those with the fewest number of shells, but only when the number of valence electrons is the same. Explain.

Which of the following elements will most likely not form an ion at all?

About Science

Particles of Matter

Elements of Chemistry

Subatomic Particles

The Atomic Nucleus

How Molecules Mix

How Water Behaves

How Chemicals React

Acids and Bases in Our Environment

Oxidations and Reductions Charge the World

Organic Compounds

Nutrients of Life

Medicinal Chemistry

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Exam 6: How Atoms Bond

The concept of a chemical bond is ________.

Which of the following statements best describes a relatively polar covalent bond?

Which of the following is a covalent compound composed of nonpolar covalent bonds?

How many electrons are used to draw the electron-dot structure for hydrogen peroxide, a covalent compound with the formula

If the following generic atom were to undergo ionization, what would be the charge of the most likely product?

Which of the following molecules has two pairs of nonbonding electrons on the central atom?

Which of the following molecules has the highest boiling point?

Which of the following is the correct electron dot structure for chlorine (atomic no. = 17)?

How is it possible for a neutral molecule, such as water, to form an ion?

Why does an atom with many valence electrons tend to gain electrons rather than lose any?

Which of the following compounds contains ionic bonds?

Which of the following statements is true?

Is an ionic compound an example of a chemical compound, or is a chemical compound an example of an ionic compound?

If all the molecules of a body remained part of that body, would the body have any odor?

The number of nonbonding pairs in the water molecule is ________.

Which of the following would be an ion with a double positive charge?

What is the molecular shape of the following molecule?

Many of the macroscopic properties of a compound depend on ________.

True or False: Atoms with the greatest electronegativity are those with the fewest number of shells, but only when the number of valence electrons is the same. Explain.

Which of the following elements will most likely not form an ion at all?

About Science

Particles of Matter

Elements of Chemistry

Subatomic Particles

The Atomic Nucleus

How Molecules Mix

How Water Behaves

How Chemicals React

Acids and Bases in Our Environment

Oxidations and Reductions Charge the World

Organic Compounds

Nutrients of Life

Medicinal Chemistry

Optimizing Food Production

Protection Water and Air Resources

Capturing Energy

Filters