Electrolysis

which ions are attracted to the anode?

• cations

• anions

which ions are attracted to the cathode?

• anions

• cations

reduction takes place at which electrode?

• anode

• cathode

What is electrolysis?

• breaking down of a compound using a current
• making a compound using a current

Which statement correctly describes the 2 electrodes?

• The anode is negative and the cathode is positive
• The anode and cathode are both positive
• The anode is positive and the cathode is negative
• The anode and cathode are both negative.

What is the name given to the solution that is being electrolysed?

• Salt solution
• Electric solution
• Mineral solution
• Electrolyte

Explain why the electrolyte has to be a liquid.

• So the ions can move and carry a charge

• So the electrons can move

• So that it doesn't get too hot

• So the fish are ok

What happens at the positive electrode?

• Positive non-metal ions are attracted
• Positive metal ions are attracted
• Negative non-metal ions are attracted
• Negative metal ions are attracted

When NaCl solution is electrolysed what has forms at the anode?

• Hydrogen
• Oxygen
• Chlorine
• Sodium

What is the equation to show what happens to Cl ions at the anode.

• Cl^- --> Cl + e-   
• 2Cl^- --> Cl₂ + 2e-   
• Cl₂ + 2e-   2Cl^- 
• Cl₂ + 2e-  _-->  2Cl^-