Question 1

Consider the following Lewis structure.   ​ What is the correct name of this compound?

Accepted Answer

A)  monphosphorus pentachloride 
B)  phosphorus chloride 
C)  phosphorus pentachloride 
D)  pentaphosphorus chloride 
E)  phophorus pentachlorine 
A)  monphosphorus pentachloride 
B)  phosphorus chloride 
C)  phosphorus pentachloride 
D)  pentaphosphorus chloride 
E)  phophorus pentachlorine

Question 2

What is the systematic name of CS2?

Accepted Answer

A)  carbon disulfur 
B)  carbon sulfide 
C)  carbon(IV) sulfide 
D)  carbon disulfide 
A)  carbon disulfur 
B)  carbon sulfide 
C)  carbon(IV) sulfide 
D)  carbon disulfide

Question 3

Ethylene has the formula C2H4. Which of the following is a correct description of ethylene?

Accepted Answer

A)  Ethylene has only single bonds. 
B)  Ethylene has one double bond. 
C)  Ethylene has one triple bond. 
D)  None of these is correct. 
A)  Ethylene has only single bonds. 
B)  Ethylene has one double bond. 
C)  Ethylene has one triple bond. 
D)  None of these is correct.

Question 4

What is the correct systematic name of FeCO3?

Accepted Answer

A)  ferric carbonate 
B)  ferrous carbonate 
C)  iron(I) carbonate 
D)  iron(II) carbonate 
A)  ferric carbonate 
B)  ferrous carbonate 
C)  iron(I) carbonate 
D)  iron(II) carbonate

Question 5

Which of the following molecules is polar?

Accepted Answer

A)  CH3COOH 
B)  HCN 
C)  both of them 
D)  neither of them 
A)  CH3COOH 
B)  HCN 
C)  both of them 
D)  neither of them

Question 6

A student is attempting to draw several resonance structures for a species. Which of the following is allowed?

Accepted Answer

A)  changing the number of valence electrons 
B)  changing the positions of valence electrons 
C)  changing the number of protons and neutrons 
D)  changing the position of the atomic nuclei 
A)  changing the number of valence electrons 
B)  changing the positions of valence electrons 
C)  changing the number of protons and neutrons 
D)  changing the position of the atomic nuclei

Question 7

Which of the following is the correct formula of dinitrogen trioxide?

Accepted Answer

A)  O2N3 
B)  O3N2 
C)  N2O3 
D)  N3O2 
A)  O2N3 
B)  O3N2 
C)  N2O3 
D)  N3O2

Question 8

Which of the following occurs when an ionic bond is formed?

Accepted Answer

A)  Electrons are transferred from the more electronegative element to the less electronegative element. 
B)  Electrons are transferred from the less electronegative element to the more electronegative element. 
C)  Electrons are shared equally. 
D)  Electrons are shared unequally. 
A)  Electrons are transferred from the more electronegative element to the less electronegative element. 
B)  Electrons are transferred from the less electronegative element to the more electronegative element. 
C)  Electrons are shared equally. 
D)  Electrons are shared unequally.

Question 9

What bond angle is most closely associated with a linear distribution of electron density?

Accepted Answer

A)  90° 
B)  109.5° 
C)  120° 
D)  180° 
A)  90° 
B)  109.5° 
C)  120° 
D)  180°

Question 10

The toxic gas hydrogen cyanide has the formula HCN. How many electrons must be shown in the Lewis structure of hydrogen cyanide?

Accepted Answer

A)  2 
B)  6 
C)  10 
D)  12 
A)  2 
B)  6 
C)  10 
D)  12

Question 11

What is the correct formula of sodium fluoride?

Accepted Answer

A)  NaFI2 
B)  NaF 
C)  Na2F 
D)  Na2F2 
A)  NaFI2 
B)  NaF 
C)  Na2F 
D)  Na2F2

Question 12

In a Lewis structure, which of the following atoms can have more than eight electrons associated with it?

Accepted Answer

A)  C 
B)  H 
C)  Be 
D)  S 
A)  C 
B)  H 
C)  Be 
D)  S

Question 13

Which of the following bonds is the least polar?

Accepted Answer

A)  H-F 
B)  H-Cl 
C)  H-Br 
D)  H-I 
A)  H-F 
B)  H-Cl 
C)  H-Br 
D)  H-I

Question 14

Which is most likely true of an atom with one valence electron?

Accepted Answer

A)  It will gain one electron. 
B)  It will gain two electrons. 
C)  It will lose one electron. 
D)  It will lose two electrons. 
A)  It will gain one electron. 
B)  It will gain two electrons. 
C)  It will lose one electron. 
D)  It will lose two electrons.

Question 15

Which of the following situations is most likely to result in the formation of a covalent bond?

Accepted Answer

A)  when an electrically positive species interacts with an electrically negative species 
B)  when two nonmetallic elements interact to form a compound 
C)  when two electrically negative species interact 
D)  when two electrically positive species interact 
A)  when an electrically positive species interacts with an electrically negative species 
B)  when two nonmetallic elements interact to form a compound 
C)  when two electrically negative species interact 
D)  when two electrically positive species interact

Question 16

Formaldehyde has the chemical formula CH2O. How many nonbonding electrons must be shown in the Lewis structure of formaldehyde?

Accepted Answer

A)  0 
B)  4 
C)  8 
D)  12 
A)  0 
B)  4 
C)  8 
D)  12

Question 17

Examine the following image representing the structure of a compound.   Which of the following is a possible formula of the compound represented in the image?

Accepted Answer

A)  KBr 
B)  SO 
C)  NO 
D)  ICl 
A)  KBr 
B)  SO 
C)  NO 
D)  ICl

Question 18

Which of the following describes how a double bond is treated in the VSEPR model?

Accepted Answer

A)  as two single bonds 
B)  as two nonbonding pairs 
C)  as a single region of electron density 
D)  none of these 
A)  as two single bonds 
B)  as two nonbonding pairs 
C)  as a single region of electron density 
D)  none of these

Question 19

A tin compound used for electroplating steel has the formula SnCl2. What is the systematic name of this compound?

Accepted Answer

A)  stannic chloride 
B)  stannous chloride 
C)  tin chloride 
D)  tin(II) chloride 
A)  stannic chloride 
B)  stannous chloride 
C)  tin chloride 
D)  tin(II) chloride

Question 20

The formula of a compound was found to be Fe2O3. What is the systematic name of this compound?

Accepted Answer

A)  iron oxide 
B)  iron(II) oxide 
C)  iron(III) oxide 
D)  diiron trioxide 
A)  iron oxide 
B)  iron(II) oxide 
C)  iron(III) oxide 
D)  diiron trioxide

Exam 3: Chemical Bonds

Consider the following Lewis structure. ​ What is the correct name of this compound?

What is the systematic name of CS2?

Ethylene has the formula C2H4. Which of the following is a correct description of ethylene?

What is the correct systematic name of FeCO3?

Which of the following molecules is polar?

A student is attempting to draw several resonance structures for a species. Which of the following is allowed?

Which of the following is the correct formula of dinitrogen trioxide?

Which of the following occurs when an ionic bond is formed?

What bond angle is most closely associated with a linear distribution of electron density?

The toxic gas hydrogen cyanide has the formula HCN. How many electrons must be shown in the Lewis structure of hydrogen cyanide?

What is the correct formula of sodium fluoride?

In a Lewis structure, which of the following atoms can have more than eight electrons associated with it?

Which of the following bonds is the least polar?

Which is most likely true of an atom with one valence electron?

Which of the following situations is most likely to result in the formation of a covalent bond?

Formaldehyde has the chemical formula CH2O. How many nonbonding electrons must be shown in the Lewis structure of formaldehyde?

Examine the following image representing the structure of a compound. Which of the following is a possible formula of the compound represented in the image?

Which of the following describes how a double bond is treated in the VSEPR model?

A tin compound used for electroplating steel has the formula SnCl2. What is the systematic name of this compound?

The formula of a compound was found to be Fe2O3. What is the systematic name of this compound?

Matter, Energy, and Measurement

Atoms

Chemical Reactions

Gases, Liquids, and Solids

Solutions and Colloids

Reaction Rates and Chemical Equilibrium

Acids and Bases

Nuclear Chemistry

Organic Chemistry

Alkanes

Alkenes, Alkynes, and Aromatic Compounds

Alcohols, Ethers, and Thiols

Chirality: the Handedness of Molecules

Amines

Aldehydes and Ketones

Carboxylic Acids

Carboxylic Anhydrides, Esters, and Amides

Carbohydrates

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Enzymes

Chemical Communications: Neurotransmitters and Hormones

Nucleotides, Nucleic Acids, and Heredity

Gene Expression and Protein Synthesis

Bioenergetics: How the Body Converts Food to Energy

Specific Catabolic Pathways: Carbohydrate, Lipid, and Protein Metabolism

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Filters

Consider the following Lewis structure. What is the correct name of this compound?

What is the systematic name of CS₂?

Ethylene has the formula C₂H₄. Which of the following is a correct description of ethylene?

What is the correct systematic name of FeCO₃?

Formaldehyde has the chemical formula CH₂O. How many nonbonding electrons must be shown in the Lewis structure of formaldehyde?

A tin compound used for electroplating steel has the formula SnCl₂. What is the systematic name of this compound?

The formula of a compound was found to be Fe₂O₃. What is the systematic name of this compound?