Question 1

The term "limelight" is derived from the old name for calcium oxide. What is the formula of calcium oxide?

Accepted Answer

A)  CaO2 
B)  Ca2O 
C)  CaO 
D)  Ca2O2 
A)  CaO2 
B)  Ca2O 
C)  CaO 
D)  Ca2O2

Question 2

Which is most likely true for an atom with six valence electrons?

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 3

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

Accepted Answer

A)  Change the connectivity of the nuclei. 
B)  Change the number of paired and unpaired electrons. 
C)  both a and b 
D)  neither a nor b 
A)  Change the connectivity of the nuclei. 
B)  Change the number of paired and unpaired electrons. 
C)  both a and b 
D)  neither a nor b

Question 4

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 5

In which of the following molecules does the carbon atom have a nearly tetrahedral distribution of electron density?

Accepted Answer

A)  C2H2 
B)  C2H4 
C)  C2H6 
D)  none of these 
A)  C2H2 
B)  C2H4 
C)  C2H6 
D)  none of these

Question 6

What is the correct name for K2HPO4?

Accepted Answer

A)  dipotassium hydrogen phosphate 
B)  potassium hydrogen phosphoxide 
C)  potassium hydrogen phosphate 
D)  potassium dihydrogen phosphate 
A)  dipotassium hydrogen phosphate 
B)  potassium hydrogen phosphoxide 
C)  potassium hydrogen phosphate 
D)  potassium dihydrogen phosphate

Question 7

What is the common name of Cu2+?

Accepted Answer

A)  copper ion 
B)  cuprate ion 
C)  cupric ion 
D)  cuprous ion 
A)  copper ion 
B)  cuprate ion 
C)  cupric ion 
D)  cuprous ion

Question 8

In which of the following molecules does the carbon atom have a linear distribution of electron density?

Accepted Answer

A)  C2H2 
B)  C2H4 
C)  C2H6 
D)  none of these 
A)  C2H2 
B)  C2H4 
C)  C2H6 
D)  none of these

Question 9

The ammonium ion has the formula NH4+. How many nonbonding electrons must be shown in the Lewis structure of the ammonium ion?

Accepted Answer

A)  0 
B)  4 
C)  8 
D)  9 
A)  0 
B)  4 
C)  8 
D)  9

Question 10

Which of the following ions has the same electronic configuration as argon?

Accepted Answer

A)  K2+ 
B)  Ca+ 
C)  both a and b 
D)  neither a nor b 
A)  K2+ 
B)  Ca+ 
C)  both a and b 
D)  neither a nor b

Question 11

Which of the following molecules is polar?

Accepted Answer

A)  CH3-CH3 
B)  CH2Cl-CH2Cl 
C)  CH3-CHCl2 
D)  none of these 
A)  CH3-CH3 
B)  CH2Cl-CH2Cl 
C)  CH3-CHCl2 
D)  none of these

Question 12

What is the correct name for KH2PO4?

Accepted Answer

A)  potassium hydride phosphate 
B)  potassium hydrogen phosphoxide 
C)  potassium hydrogen phosphate 
D)  potassium dihydrogen phosphate 
A)  potassium hydride phosphate 
B)  potassium hydrogen phosphoxide 
C)  potassium hydrogen phosphate 
D)  potassium dihydrogen phosphate

Question 13

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

Accepted Answer

A)  C 
B)  O 
C)  S 
D)  none of these 
A)  C 
B)  O 
C)  S 
D)  none of these

Question 14

What is the correct name for KCl?

Accepted Answer

A)  monopotassium monochloride 
B)  potassium chlorine 
C)  potassium chloride 
D)  potassium ion chloride ion 
A)  monopotassium monochloride 
B)  potassium chlorine 
C)  potassium chloride 
D)  potassium ion chloride ion

Question 15

In the "ous/ic" system which species is named with the "ic" ending?

Accepted Answer

A)  the less negative anion 
B)  the more negative anion 
C)  the less positive cation 
D)  the more positive cation 
A)  the less negative anion 
B)  the more negative anion 
C)  the less positive cation 
D)  the more positive cation

Question 16

Which of the following situations is most likely to result in 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 17

What is the correct name for NH4NO3, a compound found in fertilizers?

Accepted Answer

A)  ammonia nitrate 
B)  ammonium nitrate 
C)  ammonia nitrite 
D)  ammonium nitrite 
A)  ammonia nitrate 
B)  ammonium nitrate 
C)  ammonia nitrite 
D)  ammonium nitrite

Question 18

What is the correct name for BaH2?

Accepted Answer

A)  monobarium dihydride 
B)  barium dihydride 
C)  barium hydrogen 
D)  barium hydride 
A)  monobarium dihydride 
B)  barium dihydride 
C)  barium hydrogen 
D)  barium hydride

Question 19

What is the formula of the compound formed by an iron(III) ion and oxygen?

Accepted Answer

A)  FeO 
B)  FeO2 
C)  Fe2O3 
D)  Fe3O2 
A)  FeO 
B)  FeO2 
C)  Fe2O3 
D)  Fe3O2

Question 20

Which pair of species is most likely to form an ionic bond?

Accepted Answer

A)  two electrically neutral species 
B)  two electrically charged species, one positive and one negative 
C)  two negatively charged species 
D)  two positively charged species 
A)  two electrically neutral species 
B)  two electrically charged species, one positive and one negative 
C)  two negatively charged species 
D)  two positively charged species

Exam 3: Chemical Bonds

The term "limelight" is derived from the old name for calcium oxide. What is the formula of calcium oxide?

Which is most likely true for an atom with six valence electrons?

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

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

In which of the following molecules does the carbon atom have a nearly tetrahedral distribution of electron density?

What is the correct name for K2HPO4?

What is the common name of Cu2+?

In which of the following molecules does the carbon atom have a linear distribution of electron density?

The ammonium ion has the formula NH4+. How many nonbonding electrons must be shown in the Lewis structure of the ammonium ion?

Which of the following ions has the same electronic configuration as argon?

Which of the following molecules is polar?

What is the correct name for KH2PO4?

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

What is the correct name for KCl?

In the "ous/ic" system which species is named with the "ic" ending?

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

What is the correct name for NH4NO3, a compound found in fertilizers?

What is the correct name for BaH2?

What is the formula of the compound formed by an iron(III) ion and oxygen?

Which pair of species is most likely to form an ionic bond?

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 and Alkynes

Benzene and Its Derivatives

Alcohols, Ethers, and Thiols

Chirality: the Handedness of Molecules

Amines

Aldehydes and Ketones

Carboxylic Acids

Carboxylic Anhydrides, Esters, and Amides

Carbohydrates

Lipids

Proteins

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

Biosynthetic Pathways

Nutrition

Immunochemistry

Body Fluids

Filters

What is the correct name for K₂HPO₄?

What is the common name of Cu²⁺?

The ammonium ion has the formula NH₄⁺. How many nonbonding electrons must be shown in the Lewis structure of the ammonium ion?

What is the correct name for KH₂PO₄?

What is the correct name for NH₄NO₃, a compound found in fertilizers?

What is the correct name for BaH₂?