Question 1

The following reaction is an example of a ________ battery. Zn + Cu+2 → Zn+2 + Cu

Accepted Answer

A)  zinc-copper 
B)  copper-zinc 
C)  copper-silver 
D)  copper-zinc--hydrogen 
A)  zinc-copper 
B)  copper-zinc 
C)  copper-silver 
D)  copper-zinc--hydrogen

Question 2

Which of the following does not have the same number of electrons when compared with the rest?

Accepted Answer

A)  Mg2+ 
B)  O₂- 
C)  F 
D)  Ne 
A)  Mg2+ 
B)  O₂- 
C)  F 
D)  Ne

Question 3

Match each compound with its corresponding nitrogen oxidation state.
-sodium nitrate

Accepted Answer

A) +3 
B) +5 
C) 0 
D) +4 
E) +2
F)-3 
A) +3 
B) +5 
C) 0 
D) +4 
E) +2
F)-3

Question 4

What is the oxidation state of manganese in the compound KMnO₄?

Accepted Answer

A)  +4 
B)  +2 
C)  +7 
D)  -4 
A)  +4 
B)  +2 
C)  +7 
D)  -4

Question 5

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

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 6

Identify the equation that has the greatest number of electrons transferred.

Accepted Answer

A)  NaClO → NaClO₂ 
B)  2 Mg + O₂ → 2 MgO 
C)  CuCl → CuCL₂ 
D)  NaClO₂ → NaClO₄ 
A)  NaClO → NaClO₂ 
B)  2 Mg + O₂ → 2 MgO 
C)  CuCl → CuCL₂ 
D)  NaClO₂ → NaClO₄

Question 7

In a chemical bond the less electronegative element gets complete ownership of both the shared electrons.

Accepted Answer

A) True 
 B)False

Question 8

Which of the following elements may have an oxidation number of +1 or -1?

Accepted Answer

A)  hydrogen 
B)  sodium 
C)  potassium 
D)  lithium 
A)  hydrogen 
B)  sodium 
C)  potassium 
D)  lithium

Question 9

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

Accepted Answer

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

Question 10

Match each cation with its corresponding number of electrons.
-potassium ion

Accepted Answer

A) 54 
B) 2 
C) 10 
D) 18 
A) 54 
B) 2 
C) 10 
D) 18

Question 11

Match each compound with its corresponding nitrogen oxidation state.
-nitrogen dioxide

Accepted Answer

A) +3 
B) +5 
C) 0 
D) +4 
E) +2
F)-3 
A) +3 
B) +5 
C) 0 
D) +4 
E) +2
F)-3

Question 12

Which of the following elements may have more than one oxidation number?

Accepted Answer

A)  hydrogen 
B)  sodium 
C)  calcium 
D)  lithium 
A)  hydrogen 
B)  sodium 
C)  calcium 
D)  lithium

Question 13

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

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 14

What is the oxidation state of the carbon atom in the compound CO₂?

Accepted Answer

A)  +2 
B)  +3 
C)  +4 
D)  -2 
A)  +2 
B)  +3 
C)  +4 
D)  -2

Question 15

The overall charge of calcium sulfate is -2.

Accepted Answer

A) True 
 B)False

Question 16

Match each cation with its corresponding number of electrons.
-calcium ion

Accepted Answer

A) 54 
B) 2 
C) 10 
D) 18 
A) 54 
B) 2 
C) 10 
D) 18

Question 17

Assign the oxidation state of:
a) barium, in BaCL₂
b) sodium, in Na₂O
c) selenium, in H₂SeO₃
d) aluminum, in AL₂O₃

Accepted Answer

a) +2
b) +

Question 18

The equation for rust formation is ________.

Accepted Answer

A)  4 Fe + 3 O₂ + 2 H₂O → 2 Fe2O₃ + H₂O 
B)  2 Fe + O₂ → 2 FeO 
C)  MnO₂ + 2 Fe → Mn + 2 FeO 
D)  CuO + Fe → Cu + FeO 
A)  4 Fe + 3 O₂ + 2 H₂O → 2 Fe2O₃ + H₂O 
B)  2 Fe + O₂ → 2 FeO 
C)  MnO₂ + 2 Fe → Mn + 2 FeO 
D)  CuO + Fe → Cu + FeO

The following reaction is an example of a ________ battery. Zn + Cu⁺² → Zn⁺² + Cu

Which of the following does not have the same number of electrons when compared with the rest?

Match each compound with its corresponding nitrogen oxidation state. -sodium nitrate

What is the oxidation state of manganese in the compound KMnO₄?

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

Identify the equation that has the greatest number of electrons transferred.

In a chemical bond the less electronegative element gets complete ownership of both the shared electrons.

Which of the following elements may have an oxidation number of +1 or -1?

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

Match each cation with its corresponding number of electrons. -potassium ion

Match each compound with its corresponding nitrogen oxidation state. -nitrogen dioxide

Which of the following elements may have more than one oxidation number?

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

What is the oxidation state of the carbon atom in the compound CO₂?

The overall charge of calcium sulfate is -2.

Match each cation with its corresponding number of electrons. -calcium ion

Assign the oxidation state of: a) barium, in BaCL₂ b) sodium, in Na₂O c) selenium, in H₂SeO₃ d) aluminum, in AL₂O₃

The equation for rust formation is ________.

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 following reaction is an example of a ________ battery. Zn + Cu+2 → Zn+2 + Cu

Which of the following does not have the same number of electrons when compared with the rest?

Match each compound with its corresponding nitrogen oxidation state. -sodium nitrate

What is the oxidation state of manganese in the compound KMnO₄?

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

Identify the equation that has the greatest number of electrons transferred.

In a chemical bond the less electronegative element gets complete ownership of both the shared electrons.

Which of the following elements may have an oxidation number of +1 or -1?

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

Match each cation with its corresponding number of electrons. -potassium ion

Match each compound with its corresponding nitrogen oxidation state. -nitrogen dioxide

Which of the following elements may have more than one oxidation number?

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

What is the oxidation state of the carbon atom in the compound CO₂?

The overall charge of calcium sulfate is -2.

Match each cation with its corresponding number of electrons. -calcium ion

Assign the oxidation state of: a) barium, in BaCL₂ b) sodium, in Na₂O c) selenium, in H₂SeO₃ d) aluminum, in AL₂O₃

The equation for rust formation is ________.

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

The following reaction is an example of a ________ battery. Zn + Cu⁺² → Zn⁺² + Cu