Electrochemical Cells Quiz

Circle the letter of each sentence that is true about electrochemical cells.

• An electrochemical cell either produces an electric current or uses an electric current to produce a chemical change.

• Redox reactions occur in electrochemical cells.

• For an electrochemical cell to be a source of useful electrical energy, the electrons must pass through an external circuit.

• An electrochemical cell can convert chemical energy to electrical energy, but not electrical energy into chemical energy.

What type of energy conversion occurs in a voltaic cell?

• Electrical energy to chemical energy

• Chemical energy to electrical energy

• Heat energy to electrical energy

• Light energy to chemical energy

Tags

NGSS.HS-PS3-2

What type of energy conversion occurs in an electrolytic cell?

• Chemical energy to electrical energy

• Light energy to chemical energy

• Electrical energy to chemical energy

• Heat energy to electrical energy

Tags

NGSS.HS-PS3-2

Which statement is true about electron flow in both voltaic and electrolytic cells?

• Electrons flow from cathode to anode in both cells

• Electrons flow from anode to cathode in both cells

• Electrons flow only through the salt bridge

• Electrons reverse direction depending on the salt bridge

Tags

NGSS.HS-PS2-5

In a voltaic cell, which electrode is the anode?

• The positive electrode where reduction occurs

• The negative electrode where oxidation occurs

• The positive electrode where oxidation occurs

• The electrode where electrons are gained

In an electrolytic cell, which electrode is the cathode?

• The positive electrode where oxidation occurs

• The negative electrode where oxidation occurs

• The positive electrode where reduction occurs

• The negative electrode where reduction occurs

Examine the two cell diagrams provided. Identify whether it is a voltaic cell or an electrolytic cell.

• Diagram I is a voltaic cell; Diagram II is an electrolytic cell

• Diagram I is an electrolytic cell; Diagram II is a voltaic cell

• Both diagrams are voltaic cells

• Both diagrams are electrolytic cells

Tags

NGSS.HS-PS1-4

NGSS.HS-PS2-5

Which energy conversion occurs in an operating electrolytic cell?

• A) nuclear energy to electrical energy

• B) electrical energy to nuclear energy

• C) chemical energy to electrical energy

• D) electrical energy to chemical energy

Tags

NGSS.HS-PS3-3

Electrons always flow from

• cathode to anode

• anode to cathode

Which of the following statements correctly describes the movement of electrons in a voltaic cell.

• Electrons flow through the salt bridge from the cathode to the anode

• Electrons flow from left to right as the cell operates.

• Electrons flow through the external wire from the anode to cathode

• Electrons flow from right to left as the cell operates.

• Electrons flow through the salt bridge from the anode to cathode

Tags

NGSS.HS-PS2-5