Question 1

What is the correct way to write the formula of the compound formed by a hydrogen ion and a sulfate ion?

Accepted Answer

A)  H2(SO4)2 
B)  H2SO4 
C)  H(SO4)2 
D)  HSO4 
A)  H2(SO4)2 
B)  H2SO4 
C)  H(SO4)2 
D)  HSO4

Question 2

What is the name of the species formed when a potassium atom loses an electron?

Accepted Answer

A)  potassiate 
B)  potasside 
C)  potassium 
D)  potassium ion 
A)  potassiate 
B)  potasside 
C)  potassium 
D)  potassium ion

Question 3

Which of the following molecules is polar?

Accepted Answer

A)  CH3-CH3 
B)  CH2Cl-CH2Cl 
C)  CHCl2-CHCl2 
D)  CHCl2-CH2Cl 
A)  CH3-CH3 
B)  CH2Cl-CH2Cl 
C)  CHCl2-CHCl2 
D)  CHCl2-CH2Cl

Question 4

The following represents carbonic acid, an important part of the buffer system in blood.   How many total valence electrons were used in constructing this structure?

Accepted Answer

A)  24 
B)  12 
C)  17 
D)  22 
E)  none of these 
A)  24 
B)  12 
C)  17 
D)  22 
E)  none of these

Question 5

Which of the following molecules is best described as having a nearly tetrahedral distribution of electron density?

Accepted Answer

A)  BeCl2 
B)  OF2 
C)  SnCl2 
D)  none of these 
A)  BeCl2 
B)  OF2 
C)  SnCl2 
D)  none of these

Question 6

What is the name of NO2?

Accepted Answer

A)  nitrogen oxide 
B)  nitrogen oxygen 
C)  nitrogen dioxide 
D)  nitrous oxide 
A)  nitrogen oxide 
B)  nitrogen oxygen 
C)  nitrogen dioxide 
D)  nitrous oxide

Question 7

Which electronegativity difference is associated with a nonpolar covalent bond?

Accepted Answer

A)  exactly 0 
B)  less than 0.5 
C)  between 0.5 and 1.9 
D)  greater than 1.9 
A)  exactly 0 
B)  less than 0.5 
C)  between 0.5 and 1.9 
D)  greater than 1.9

Question 8

Which of the following molecules has the greatest polarity?

Accepted Answer

A)  H2O 
B)  CH4 
C)  C2H2 
D)  CO2 
A)  H2O 
B)  CH4 
C)  C2H2 
D)  CO2

Question 9

The term "limelight" is derived from the old name of 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 10

What is the correct name of XeF4?

Accepted Answer

A)  xenon fluoride 
B)  xenon difluoride 
C)  xenon tetrafluoride 
D)  xenon hexafluoride 
A)  xenon fluoride 
B)  xenon difluoride 
C)  xenon tetrafluoride 
D)  xenon hexafluoride

Question 11

Which types of elements generally have high electronegativities?

Accepted Answer

A)  rare earth metals 
B)  transition metals 
C)  alkali metals 
D)  halogens 
A)  rare earth metals 
B)  transition metals 
C)  alkali metals 
D)  halogens

Question 12

Examine the following image representing the structure of a compound.   If the larger spheres represent SO42−, then which of the following may the smaller spheres represent?

Accepted Answer

A)  K+ 
B)  O2− 
C)  Mg2+ 
D)  Al3+ 
A)  K+ 
B)  O2− 
C)  Mg2+ 
D)  Al3+

Question 13

What is the common name of the compound whose formula is FeCl2?

Accepted Answer

A)  iron chloride 
B)  iron chlorine 
C)  ferric chloride 
D)  ferrous chloride 
A)  iron chloride 
B)  iron chlorine 
C)  ferric chloride 
D)  ferrous chloride

Question 14

For which types of elements do we sometimes use the "ous/ic" system in naming ions?

Accepted Answer

A)  alkali metals 
B)  halogens 
C)  noble gases 
D)  transition metals 
A)  alkali metals 
B)  halogens 
C)  noble gases 
D)  transition metals

Question 15

How many electrons are associated with a triple bond?

Accepted Answer

A)  2 
B)  3 
C)  4 
D)  6 
A)  2 
B)  3 
C)  4 
D)  6

Question 16

What is the correct formula of aluminum oxide?

Accepted Answer

A)  AlO 
B)  AlO2 
C)  Al2O 
D)  Al2O3 
A)  AlO 
B)  AlO2 
C)  Al2O 
D)  Al2O3

Question 17

Examine the following image representing the structure of a compound.   If the smaller spheres represent K+ and the larger spheres represent Cl−, then what is the name of this compound?

Accepted Answer

A)  potassium dichloride 
B)  dipotassium chloride 
C)  monopotassium dichloride 
D)  potassium chloride 
A)  potassium dichloride 
B)  dipotassium chloride 
C)  monopotassium dichloride 
D)  potassium chloride

Question 18

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

Accepted Answer

A)  4 
B)  8 
C)  12 
D)  16 
A)  4 
B)  8 
C)  12 
D)  16

Question 19

Which of the following is true in the carbonate ion, CO32−?

Accepted Answer

A)  All of the carbon to oxygen bonds are equivalent. 
B)  The carbon atom does not have an octet. 
C)  The carbon atoms form two single bonds and one double bond. 
D)  The electrons are constantly moving from one bond location to another. 
A)  All of the carbon to oxygen bonds are equivalent. 
B)  The carbon atom does not have an octet. 
C)  The carbon atoms form two single bonds and one double bond. 
D)  The electrons are constantly moving from one bond location to another.

Question 20

What is the formula of the compound formed by potassium and chlorine?

Accepted Answer

A)  KCl 
B)  K2Cl2 
C)  KCl4 
D)  K2Cl4 
A)  KCl 
B)  K2Cl2 
C)  KCl4 
D)  K2Cl4

Exam 3: Chemical Bonds

What is the correct way to write the formula of the compound formed by a hydrogen ion and a sulfate ion?

What is the name of the species formed when a potassium atom loses an electron?

Which of the following molecules is polar?

The following represents carbonic acid, an important part of the buffer system in blood. How many total valence electrons were used in constructing this structure?

Which of the following molecules is best described as having a nearly tetrahedral distribution of electron density?

What is the name of NO2?

Which electronegativity difference is associated with a nonpolar covalent bond?

Which of the following molecules has the greatest polarity?

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

What is the correct name of XeF4?

Which types of elements generally have high electronegativities?

Examine the following image representing the structure of a compound. If the larger spheres represent SO42−, then which of the following may the smaller spheres represent?

What is the common name of the compound whose formula is FeCl2?

For which types of elements do we sometimes use the "ous/ic" system in naming ions?

How many electrons are associated with a triple bond?

What is the correct formula of aluminum oxide?

Examine the following image representing the structure of a compound. If the smaller spheres represent K+ and the larger spheres represent Cl−, then what is the name of this compound?

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

Which of the following is true in the carbonate ion, CO32−?

What is the formula of the compound formed by potassium and chlorine?

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

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 name of NO₂?

What is the correct name of XeF₄?

Examine the following image representing the structure of a compound. If the larger spheres represent SO₄²⁻, then which of the following may the smaller spheres represent?

What is the common name of the compound whose formula is FeCl₂?

Examine the following image representing the structure of a compound. If the smaller spheres represent K⁺ and the larger spheres represent Cl⁻, then what is the name of this compound?

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

Which of the following is true in the carbonate ion, CO₃²⁻?