ELECTROCHEMISTRY EXAMINATION QUESTIONS AND
CORRECT ANSWER WITH EXPLANATION GRADED A+
STUDY GUIDE SOUTHERN NEW HAMPSHIRE UNIVERSITY
1. Electrochemistry is the study of:
A. Relationship between electricity and chemical reactions
B. Weather systems
C. Plant growth
D. Rock formation
Answer: A
Rationale: It connects redox reactions and electrical energy.
2. A redox reaction involves:
A. Oxidation and reduction
B. Melting only
C. Freezing only
D. Evaporation only
Answer: A
Rationale: Electron transfer reactions.
3. Oxidation is:
A. Loss of electrons
B. Gain of electrons
C. Gain of protons
D. Loss of neutrons
Answer: A
Rationale: OIL (Oxidation Is Loss).
4. Reduction is:
A. Gain of electrons
B. Loss of electrons
C. Gain of protons
D. Loss of atoms
Answer: A
Rationale: RIG (Reduction Is Gain).
5. Oxidizing agent is a substance that:
A. Gains electrons
, B. Loses electrons
C. Gains protons
D. Loses mass
Answer: A
Rationale: It gets reduced.
6. Reducing agent is a substance that:
A. Loses electrons
B. Gains electrons
C. Gains mass
D. Loses protons
Answer: A
Rationale: It gets oxidized.
7. Electrochemical cell converts:
A. Chemical energy to electrical energy
B. Heat to light
C. Light to sound
D. Mass to energy
Answer: A
Rationale: Energy conversion system.
8. Galvanic cell produces:
A. Electricity from spontaneous reactions
B. Heat only
C. Light only
D. Sound only
Answer: A
Rationale: Spontaneous redox reaction.
9. Electrolytic cell uses:
A. Electricity to drive reactions
B. Heat only
C. Light only
D. Pressure only
Answer: A
Rationale: Non-spontaneous reactions.
10. Anode is where:
A. Oxidation occurs
, B. Reduction occurs
C. Neutralization occurs
D. Condensation occurs
Answer: A
Rationale: AnOx rule.
11. Cathode is where:
A. Reduction occurs
B. Oxidation occurs
C. Evaporation occurs
D. Dissolution occurs
Answer: A
Rationale: RED CAT rule.
12. In galvanic cells, electrons flow from:
A. Anode to cathode
B. Cathode to anode
C. Electrolyte to salt bridge
D. Salt bridge to electrode
Answer: A
Rationale: Electron flow direction.
13. Electrode is:
A. Conducting surface for electron transfer
B. Insulator
C. Gas medium
D. Liquid only
Answer: A
Rationale: Site of redox reaction.
14. Electrolyte is:
A. Ion-conducting solution
B. Solid metal
C. Gas only
D. Vacuum
Answer: A
Rationale: Contains mobile ions.
15. Salt bridge function is to:
A. Maintain charge balance
CORRECT ANSWER WITH EXPLANATION GRADED A+
STUDY GUIDE SOUTHERN NEW HAMPSHIRE UNIVERSITY
1. Electrochemistry is the study of:
A. Relationship between electricity and chemical reactions
B. Weather systems
C. Plant growth
D. Rock formation
Answer: A
Rationale: It connects redox reactions and electrical energy.
2. A redox reaction involves:
A. Oxidation and reduction
B. Melting only
C. Freezing only
D. Evaporation only
Answer: A
Rationale: Electron transfer reactions.
3. Oxidation is:
A. Loss of electrons
B. Gain of electrons
C. Gain of protons
D. Loss of neutrons
Answer: A
Rationale: OIL (Oxidation Is Loss).
4. Reduction is:
A. Gain of electrons
B. Loss of electrons
C. Gain of protons
D. Loss of atoms
Answer: A
Rationale: RIG (Reduction Is Gain).
5. Oxidizing agent is a substance that:
A. Gains electrons
, B. Loses electrons
C. Gains protons
D. Loses mass
Answer: A
Rationale: It gets reduced.
6. Reducing agent is a substance that:
A. Loses electrons
B. Gains electrons
C. Gains mass
D. Loses protons
Answer: A
Rationale: It gets oxidized.
7. Electrochemical cell converts:
A. Chemical energy to electrical energy
B. Heat to light
C. Light to sound
D. Mass to energy
Answer: A
Rationale: Energy conversion system.
8. Galvanic cell produces:
A. Electricity from spontaneous reactions
B. Heat only
C. Light only
D. Sound only
Answer: A
Rationale: Spontaneous redox reaction.
9. Electrolytic cell uses:
A. Electricity to drive reactions
B. Heat only
C. Light only
D. Pressure only
Answer: A
Rationale: Non-spontaneous reactions.
10. Anode is where:
A. Oxidation occurs
, B. Reduction occurs
C. Neutralization occurs
D. Condensation occurs
Answer: A
Rationale: AnOx rule.
11. Cathode is where:
A. Reduction occurs
B. Oxidation occurs
C. Evaporation occurs
D. Dissolution occurs
Answer: A
Rationale: RED CAT rule.
12. In galvanic cells, electrons flow from:
A. Anode to cathode
B. Cathode to anode
C. Electrolyte to salt bridge
D. Salt bridge to electrode
Answer: A
Rationale: Electron flow direction.
13. Electrode is:
A. Conducting surface for electron transfer
B. Insulator
C. Gas medium
D. Liquid only
Answer: A
Rationale: Site of redox reaction.
14. Electrolyte is:
A. Ion-conducting solution
B. Solid metal
C. Gas only
D. Vacuum
Answer: A
Rationale: Contains mobile ions.
15. Salt bridge function is to:
A. Maintain charge balance
