Question 1

The oxidation state of metals is almost always a positive number.

Accepted Answer

A) True 
 B)False

Question 2

Match each compound with its corresponding carbon oxidation.
-CO

Accepted Answer

A) +4 
B) -4 
C) 0 
D) +2 
E) -1 
A) +4 
B) -4 
C) 0 
D) +2 
E) -1

Question 3

The highest oxidation state that sulfur can have is +6.

Accepted Answer

A) True 
 B)False

Question 4

Match each element with its most likely oxidation state.
-potassium

Accepted Answer

A) +2 
B) -1 
C) -3, +3, 5 
D) -2 
E) +4,-4
F)+3
G)+1
H)-3 
A) +2 
B) -1 
C) -3, +3, 5 
D) -2 
E) +4,-4
F)+3
G)+1
H)-3

Question 5

The oxidation state of nitrogen in the ammonium ion is ________.

Accepted Answer

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

Question 6

Which of the following elements may have a +3 charge when it becomes an ion?

Accepted Answer

A)  magnesium 
B)  aluminum 
C)  carbon 
D)  chlorine 
A)  magnesium 
B)  aluminum 
C)  carbon 
D)  chlorine

Question 7

Train tracks, iron rails,are difficult to weld. Large pieces of iron, like train tracks, can be "spot-welded" by placing a mixture of powdered aluminum and iron (III) oxide between the two pieces of iron and adding to that a small amount of sulfuric acid to get a reaction started.
a) Write a balanced chemical equation for the reaction of aluminum and iron (III) oxide (ignore the role of sulfuric acid in this).
b) Identify the oxidizing and reducing agents.
c) Identify the oxidation and reduction products.

Accepted Answer

a) 2Al + Fe₂O₃ → AL₂O₃ + 2Fe b)

Question 8

The oxidation state of non-metals is almost always a negative number.

Accepted Answer

A) True 
 B)False

Question 9

Match each compound with its corresponding sulfur oxidation state.
-sulfur dichloride

Accepted Answer

A) +4 
B) 0 
C) +6 
D) +2 
E) -2 
A) +4 
B) 0 
C) +6 
D) +2 
E) -2

Question 10

The only tetraatomic element is sulfur.

Accepted Answer

A) True 
 B)False

Question 11

A reducing agent is itself oxidized.

Accepted Answer

A) True 
 B)False

Question 12

Match each element with its most likely oxidation state.
-oxygen

Accepted Answer

A) +2 
B) -1 
C) -3, +3, 5 
D) -2 
E) +4,-4
F)+3
G)+1
H)-3 
A) +2 
B) -1 
C) -3, +3, 5 
D) -2 
E) +4,-4
F)+3
G)+1
H)-3

Question 13

In Mg2+ the magnesium ion has 10 electrons.

Accepted Answer

A) True 
 B)False

Question 14

Halogens most often have an oxidation state of ________.

Accepted Answer

A)  +1 
B)  -1 
C)  +7 
D)  -3 
A)  +1 
B)  -1 
C)  +7 
D)  -3

Question 15

Match each element with its most likely oxidation state.
-chlorine

Accepted Answer

A) +2 
B) -1 
C) -3, +3, 5 
D) -2 
E) +4,-4
F)+3
G)+1
H)-3 
A) +2 
B) -1 
C) -3, +3, 5 
D) -2 
E) +4,-4
F)+3
G)+1
H)-3

Question 16

The oxidation state of phosphorus in P4 is ________.

Accepted Answer

A)  +4 
B)  +3 
C)  -3 
D)  0 
A)  +4 
B)  +3 
C)  -3 
D)  0

Question 17

Match each compound with its corresponding sulfur oxidation state.
-sodium sulfite

Accepted Answer

A) +4 
B) 0 
C) +6 
D) +2 
E) -2 
A) +4 
B) 0 
C) +6 
D) +2 
E) -2

Question 18

When drawing dot structures, lone pairs of electrons are assigned completely to the atom on which they are drawn on the dot diagram.

Accepted Answer

A) True 
 B)False

Question 19

Identify the reducing agent in the following chemical process (a lead storage battery). Pb + PbO₂ + 2H+ + 2HSO₄- → 2PbSO₄ + 2H₂O

Accepted Answer

A)  PbO₂ 
B)  Pb 
C)  H+ 
D)  2HSO₄- 
A)  PbO₂ 
B)  Pb 
C)  H+ 
D)  2HSO₄-

Question 20

The cathode is the electrode where oxidation occurs.

Accepted Answer

A) True 
 B)False

The oxidation state of metals is almost always a positive number.

Match each compound with its corresponding carbon oxidation. -CO

The highest oxidation state that sulfur can have is +6.

Match each element with its most likely oxidation state. -potassium

The oxidation state of nitrogen in the ammonium ion is ________.

Which of the following elements may have a +3 charge when it becomes an ion?

The oxidation state of non-metals is almost always a negative number.

Match each compound with its corresponding sulfur oxidation state. -sulfur dichloride

The only tetraatomic element is sulfur.

A reducing agent is itself oxidized.

Match each element with its most likely oxidation state. -oxygen

In Mg2+ the magnesium ion has 10 electrons.

Halogens most often have an oxidation state of ________.

Match each element with its most likely oxidation state. -chlorine

The oxidation state of phosphorus in P4 is ________.

Match each compound with its corresponding sulfur oxidation state. -sodium sulfite

When drawing dot structures, lone pairs of electrons are assigned completely to the atom on which they are drawn on the dot diagram.

Identify the reducing agent in the following chemical process (a lead storage battery). Pb + PbO₂ + 2H+ + 2HSO₄- → 2PbSO₄ + 2H₂O

The cathode is the electrode where oxidation occurs.

What Is Chemistry

The Numerical Side of Chemistry

The Evolution of Atomic Theory

The Modern Model of the Atom

Chemical Bonding and Nomenclature

The Shape of Molecules

Intermolecular Forces and the Phases of Matter

Chemical Reactions

Stoichiometry and the Mole

What If There Were No Intermolecular Forces - the Ideal Gas

Solutions

When Reactants Turn Into Products

Chemical Equilibrium

Electrolytes, Acids, and Bases

Nuclear Chemistry

The Chemistry of Carbon

Synthetic and Biological Polymers

Filters

Exam 10: Electron Transfer in Chemical Reactions

The oxidation state of metals is almost always a positive number.

Match each compound with its corresponding carbon oxidation. -CO

The highest oxidation state that sulfur can have is +6.

Match each element with its most likely oxidation state. -potassium

The oxidation state of nitrogen in the ammonium ion is ________.

Which of the following elements may have a +3 charge when it becomes an ion?

The oxidation state of non-metals is almost always a negative number.

Match each compound with its corresponding sulfur oxidation state. -sulfur dichloride

The only tetraatomic element is sulfur.

A reducing agent is itself oxidized.

Match each element with its most likely oxidation state. -oxygen

In Mg2+ the magnesium ion has 10 electrons.

Halogens most often have an oxidation state of ________.

Match each element with its most likely oxidation state. -chlorine

The oxidation state of phosphorus in P4 is ________.

Match each compound with its corresponding sulfur oxidation state. -sodium sulfite

When drawing dot structures, lone pairs of electrons are assigned completely to the atom on which they are drawn on the dot diagram.

Identify the reducing agent in the following chemical process (a lead storage battery). Pb + PbO₂ + 2H+ + 2HSO₄- → 2PbSO₄ + 2H₂O

The cathode is the electrode where oxidation occurs.

What Is Chemistry

The Numerical Side of Chemistry

The Evolution of Atomic Theory

The Modern Model of the Atom

Chemical Bonding and Nomenclature

The Shape of Molecules

Intermolecular Forces and the Phases of Matter

Chemical Reactions

Stoichiometry and the Mole

What If There Were No Intermolecular Forces - the Ideal Gas

Solutions

When Reactants Turn Into Products

Chemical Equilibrium

Electrolytes, Acids, and Bases

Nuclear Chemistry

The Chemistry of Carbon

Synthetic and Biological Polymers

Filters