5.4 Chemical Cells and Fuel Cells

• Match the component of a chemical cell with its description:

  Anode ↔️ Where oxidation occurs

  Cathode ↔️ Where reduction occurs

  Electrolyte ↔️ Allows ion flow
• The flow of electrons in the external circuit generates an electric current
• Order the steps in how a chemical cell generates electricity:

  1️⃣ Oxidation at the anode

  2️⃣ Release of electrons

  3️⃣ Electron flow through external circuit

  4️⃣ Reduction at the cathode

  5️⃣ Generation of electric current
• Voltaic cells use chemical energy from spontaneous reactions
• A chemical cell converts chemical energy into electrical
• During oxidation, atoms at the anode lose electrons
• Voltaic cells use external electrical energy to drive chemical reactions.

  False
• What is the role of the cathode in a chemical cell?

  Reduction of atoms
• The electrolyte allows ions to flow between the anode and cathode.ions
• What is the standard notation for a chemical cell?

  Anode \| Electrolyte \|\| Electrolyte \| Cathode
• Match the component of a chemical cell with its role:

  Anode ↔️ Oxidation occurs here

  Cathode ↔️ Reduction occurs here

  Electrolyte ↔️ Allows ion flow

  External circuit ↔️ Allows electron flow
• Electrolytic cells drive non-spontaneous reactions by consuming electrical energy.


  True
• What is the role of the anode in a chemical cell?

  Oxidation of atoms
• The flow of electrons from the anode to the cathode generates an electric current
• The anode is where oxidation occurs.oxidation
• The cathode is where reduction occurs.

  True
• What generates the electric current in a chemical cell?

  Flow of electrons
• Without the electrolyte, a chemical cell cannot function.


  True
• The notation for a zinc-copper voltaic cell is Zn \| ZnSO4 \|\| CuSO4 \| Cu.Zn \| ZnSO4 \|\| CuSO4 \| Cu
• What is the purpose of a chemical cell?

  Converts chemical to electrical energy
• Reduction occurs at the cathode.


  True
• Match the type of chemical cell with its characteristics:

  Voltaic (Galvanic) Cell ↔️ Generates electrical energy

  Electrolytic Cell ↔️ Drives chemical reactions
• Why is the electrolyte necessary in a chemical cell?

  Completes the circuit
• The standard notation for a chemical cell includes the anode, cathode, and two types of electrolyte.electrolyte
• What does the notation Zn \| ZnSO4 \|\| CuSO4 \| Cu represent?

  Zinc-copper voltaic cell
• The cathode in a chemical cell is where reduction occurs, accepting electrons
• The notation for a zinc-copper voltaic cell indicates a zinc cathode and a copper anode.

  False
• In a fuel cell, the fuel (e.g., hydrogen) is oxidized at the anode
• Steps in the operation of a fuel cell

  1️⃣ Fuel is oxidized at the anode

  2️⃣ Electrons flow through an external circuit

  3️⃣ Oxidant is reduced at the cathode

  4️⃣ Electric current is generated
• Fuel cells have a high efficiency, reaching up to 60 percent.
• Fuel cells produce zero emissions except for water.


  True
• What is the key difference between chemical cells and fuel cells in terms of their energy source?

  Fixed vs. continuous
• Order the steps in the operation of a fuel cell vehicle:

  1️⃣ Fuel is supplied to the anode

  2️⃣ Electrons flow to the cathode

  3️⃣ Oxidant is reduced at the cathode

  4️⃣ Water is produced as a byproduct
• Fuel cells are quieter and more efficient than chemical cells.


  True
• The anode is where oxidation occurs, releasing electrons.oxidation
• What facilitates the movement of ions between the anode and cathode?

  Electrolyte
• Voltaic cells use chemical energy from spontaneous redox reactions to produce an electric current.
• What type of chemical cell consumes electrical energy?

  Electrolytic cell
• At the cathode, atoms gain electrons.


  True
• In a fuel cell, the fuel is oxidized at the anode.anode