5.4 Chemical Cells and Fuel Cells

• What type of energy do chemical cells convert into electrical energy?

  Chemical energy
• The electrolyte completes the circuit in a chemical cell by allowing ions to move between the anode and cathode.


  True
• What would happen to the electrical current in a chemical cell without an electrolyte?

  It would stop
• What type of energy do chemical cells convert into electrical energy?

  Chemical energy
• What is the role of the electrolyte in a chemical cell?

  Allows ion movement
• Steps in the flow of electrons in a chemical cell

  1️⃣ The anode releases electrons through oxidation

  2️⃣ Electrons travel through the external circuit

  3️⃣ The cathode accepts electrons through reduction

  4️⃣ Flow of electrons creates an electric current
• Match the type of cell with its energy conversion:

  Galvanic cell ↔️ Chemical to electrical

  Electrolytic cell ↔️ Electrical to chemical
• What type of energy do fuel cells convert directly into electrical energy?

  Chemical energy
• What are some common applications of fuel cells?

  Automotive, aerospace, stationary power
• Match the feature with the correct type of cell:

  Chemical cell ↔️ Stored chemicals

  Fuel cell ↔️ Continuous fuel supply
• The cathode in a chemical cell is where electrons are accepted.

  True
• The anode is the site of the oxidation reaction, which releases electrons.
• Electrons in a chemical cell flow from the anode to the cathode through an external circuit.
• The flow of electrons in a chemical cell creates electrical energy.


  True
• Electrons are accepted at the cathode of a chemical cell.

  True
• Where do electrons flow from in a chemical cell?

  Anode to cathode
• The electrolyte enables ion movement between the anode and cathode to complete the circuit.


  True
• What is the primary difference between galvanic and electrolytic cells?

  Energy conversion
• In a hydrogen fuel cell, water is formed at the cathode
• Fuel cells generally have higher efficiency compared to chemical cells.


  True
• In a chemical cell, the anode is where oxidation occurs.
• What is the role of the electrolyte in a chemical cell?

  Allows ion movement
• How is an electric current generated in a chemical cell?

  Flow of electrons
• Match the component of a chemical cell with its function:

  Anode ↔️ Site of oxidation

  Cathode ↔️ Site of reduction

  Electrolyte ↔️ Allows ion movement
• The anode in a chemical cell is the site of the oxidation
• The flow of electrons from the anode to the cathode through an external circuit creates an electric current
• Why is the electrolyte necessary in a chemical cell?

  Completes the circuit
• Galvanic cells involve spontaneous redox reactions, while electrolytic cells require external energy
• The anode in a fuel cell is where oxidation of the fuel occurs.

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

  Fuel cells require continuous supply