SC10

• What is the process of electrolysis used for?

  To separate elements from compounds
• What happens at the cathode during electrolysis?

  Reduction occurs, gaining electrons
• What is produced at the anode during electrolysis of copper sulfate?

  Oxygen gas
• What is the role of the electrolyte in electrolysis?

  It conducts electricity and allows ion movement
• What are the products of electrolysis for molten sodium chloride?

  • Cathode: Sodium metal (Na)
  • Anode: Chlorine gas (Cl₂)
• What are the products of electrolysis for copper bromide?

  • Cathode: Copper metal (Cu)
  • Anode: Bromine gas (Br₂)
• What does OIL stand for in electrolysis?

  Oxidation Is Loss of electrons
• What does RIG stand for in electrolysis?

  Reduction Is Gain of electrons
• What is the difference between electrolysis in solutions and molten compounds?

  • Solutions: Ions are dissolved in water
  • Molten: Ions are melted and free to move
• What is the test for hydrogen gas?

  It makes a squeaky pop with a lit splint
• What is the test for oxygen gas?

  A glowing splint relights in oxygen