Question 1

Which is the correct formula for the ionic compound containing iron(III)ions and oxide ions?

Accepted Answer

A) FeO 
B) FeO2 
C) Fe2O2 
D) Fe2O3 
E) Fe3O2 
A) FeO 
B) FeO2 
C) Fe2O2 
D) Fe2O3 
E) Fe3O2

Question 2

What is the formula of a compound formed by the ions M2+ and X3-?

Accepted Answer

A) M2X3 
B) M3X2 
C) MX3 
D) M2X 
E) none of the above 
A) M2X3 
B) M3X2 
C) MX3 
D) M2X 
E) none of the above

Question 3

Predict the charge that would be found on a carbide ion and on a nitride ion.Explain why these ions are seldom found in compounds.

Accepted Answer

The names of both ions end in "ide," sug

Question 4

Briefly explain how the octet rule determines the charge,both sign and magnitude,of an ion.

Accepted Answer

The octet rule states that main group el

Question 5

Which of the following elements is most likely to form an ion with a -2 charge?

Accepted Answer

A) Mg 
B) Si 
C) S 
D) K 
E) Ti 
A) Mg 
B) Si 
C) S 
D) K 
E) Ti

Question 6

Match the following.
-sodium nitrite

Accepted Answer

A)   
B)   
C)   
D)   
E)  
F) 
G) 
H) 
I) 
J) 
K) 
L)  
A)   
B)   
C)   
D)   
E)  
F) 
G) 
H) 
I) 
J) 
K) 
L)

Question 7

The formula PO43- means that this ion is composed of

Accepted Answer

A) one atom of phosphorus,one atom of oxygen,and three extra electrons. 
B) four atoms of phosphorus,four atoms or oxygen,and three extra electrons. 
C) one atom of phosphorus,four atoms of oxygen,and three electrons have been lost. 
D) one atom of phosphorus,four atoms of oxygen,and three extra electrons. 
E) four atoms of phosphorus,four atoms of oxygen,and three electrons have been lost. 
A) one atom of phosphorus,one atom of oxygen,and three extra electrons. 
B) four atoms of phosphorus,four atoms or oxygen,and three extra electrons. 
C) one atom of phosphorus,four atoms of oxygen,and three electrons have been lost. 
D) one atom of phosphorus,four atoms of oxygen,and three extra electrons. 
E) four atoms of phosphorus,four atoms of oxygen,and three electrons have been lost.

Question 8

What is the most likely charge on an ion formed by an element with a valence electron configuration of ns2np1?

Accepted Answer

A) 3- 
B) 1- 
C) 1+ 
D) 3+ 
E) 5+ 
A) 3- 
B) 1- 
C) 1+ 
D) 3+ 
E) 5+

Question 9

What ions are formed when sodium hydroxide dissolves in water?

Accepted Answer

A) H+ and OH- 
B) Na+ and OH- 
C) H+ and Na+ 
D) Only Na+ 
E) Only OH- 
A) H+ and OH- 
B) Na+ and OH- 
C) H+ and Na+ 
D) Only Na+ 
E) Only OH-

Question 10

Match the following.
-hydrogen chloride

Accepted Answer

A)   
B)   
C)   
D)   
E)  
F) 
G) 
H) 
I) 
J) 
K) 
L)  
A)   
B)   
C)   
D)   
E)  
F) 
G) 
H) 
I) 
J) 
K) 
L)

Question 11

The formula for the compound chromium(II)nitrate is

Accepted Answer

A) C2NO3. 
B) Cr2NO3. 
C) CrNO3. 
D) Cr(NO3)2. 
E) CrNO2. 
A) C2NO3. 
B) Cr2NO3. 
C) CrNO3. 
D) Cr(NO3)2. 
E) CrNO2.

Question 12

An atom with three valence electrons will most likely ________ to attain an octet of valence electrons.

Accepted Answer

A) lose three electrons 
B) gain three electrons 
C) gain five electrons 
D) gain one electron 
E) lose one electron 
A) lose three electrons 
B) gain three electrons 
C) gain five electrons 
D) gain one electron 
E) lose one electron

Question 13

What is the formula of the ammonium ion?

Accepted Answer

A) Am- 
B) Am+ 
C) NH41+ 
D) NH4+ 
E) N4H1+ 
A) Am- 
B) Am+ 
C) NH41+ 
D) NH4+ 
E) N4H1+

Question 14

What is the formula of the nitrate ion?

Accepted Answer

A) NO32- 
B) NO3- 
C) NO21- 
D) NO31- 
E) none of the above 
A) NO32- 
B) NO3- 
C) NO21- 
D) NO31- 
E) none of the above

Question 15

The formula for potassium dichromate is

Accepted Answer

A) KCr2O7. 
B) K2Cr2O7. 
C) K2CrO4. 
D) PCr2O7. 
E) PCrO4. 
A) KCr2O7. 
B) K2Cr2O7. 
C) K2CrO4. 
D) PCr2O7. 
E) PCrO4.

Question 16

Match the following.
-sodium acetate

Accepted Answer

A)   
B)   
C)   
D)   
E)  
F) 
G) 
H) 
I) 
J) 
K) 
L)  
A)   
B)   
C)   
D)   
E)  
F) 
G) 
H) 
I) 
J) 
K) 
L)

Question 17

Match the following.
-potassium sulfite

Accepted Answer

A)   
B)   
C)   
D)   
E)  
F) 
G) 
H) 
I) 
J) 
K) 
L)  
A)   
B)   
C)   
D)   
E)  
F) 
G) 
H) 
I) 
J) 
K) 
L)

Question 18

A formula unit of ammonium sulfate consists of ________ ammonium ions and ________ sulfate ions.

Accepted Answer

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

Question 19

Which of the following ions does not have the same electron configuration as the noble gas neon?

Accepted Answer

A) O-2 
B) F- 
C) Al+3 
D) S-2 
E) Mg+2 
A) O-2 
B) F- 
C) Al+3 
D) S-2 
E) Mg+2

Question 20

In order to form an octet,an atom of selenium will

Accepted Answer

A) lose 6 electrons. 
B) gain 6 electrons. 
C) lose 2 electrons. 
D) gain 2 electrons. 
E) gain 3 electrons 
A) lose 6 electrons. 
B) gain 6 electrons. 
C) lose 2 electrons. 
D) gain 2 electrons. 
E) gain 3 electrons

Exam 3: Ionic Compounds

Which is the correct formula for the ionic compound containing iron(III)ions and oxide ions?

What is the formula of a compound formed by the ions M2+ and X3-?

Predict the charge that would be found on a carbide ion and on a nitride ion.Explain why these ions are seldom found in compounds.

Briefly explain how the octet rule determines the charge,both sign and magnitude,of an ion.

Which of the following elements is most likely to form an ion with a -2 charge?

Match the following. -sodium nitrite

The formula PO43- means that this ion is composed of

What is the most likely charge on an ion formed by an element with a valence electron configuration of ns2np1?

What ions are formed when sodium hydroxide dissolves in water?

Match the following. -hydrogen chloride

The formula for the compound chromium(II)nitrate is

An atom with three valence electrons will most likely ________ to attain an octet of valence electrons.

What is the formula of the ammonium ion?

What is the formula of the nitrate ion?

The formula for potassium dichromate is

Match the following. -sodium acetate

Match the following. -potassium sulfite

A formula unit of ammonium sulfate consists of ________ ammonium ions and ________ sulfate ions.

Which of the following ions does not have the same electron configuration as the noble gas neon?

In order to form an octet,an atom of selenium will

Matter and Measurements

Atoms and the Periodic Table

Molecular Compounds

Classification and Balancing of Chemical Reactions

Chemical Reactions: Mole and Mass Relationships

Chemical Reactions: Energy, rates, and Equilibrium

Gases, liquids, and Solids

Solutions

Acids and Bases

Nuclear Chemistry

Introduction to Organic Chemistry: Alkanes

Alkenes, alkynes, and Aromatic Compounds

Some Compounds With Oxygen, sulfur, or a Halogen

Aldehydes and Ketones

Amines

Carboxylic Acids and Their Derivatives

Amino Acids and Proteins

Enzymes and Vitamins

Carbohydrates

The Generation of Biochemical Energy

Carbohydrate Metabolism

Lipids

Lipid Metabolism

Protein and Amino Acid Metabolism

Nucleic Acids and Protein Synthesis

Genomics

Chemical Messengers: Hormones, neurotransmitters, and Drugs

Body Fluids

Filters

What is the formula of a compound formed by the ions M²⁺ and X^3-?

The formula PO₄^3- means that this ion is composed of

What is the most likely charge on an ion formed by an element with a valence electron configuration of ns²np¹?

A formula unit of ammonium sulfate consists of ammonium ions and sulfate ions.