Electrolysis plenary L1 - Ions elctrolysis of molten C

What is the product formed at the cathode during the electrolysis of molten magnesium fluoride?

• magnesium
• hydrogen
• fluorine
• oxygen

Explain why the electrolyte has to be a liquid.

• So the ions can move
• So the electrons can move
• So that it doesn't get too hot
• So the fish are ok

What does the Cathode (-) do to ions?

• Give electrons to the Positive ions to turn them back into atoms
• Take electrons from the positive ions?
• Turn ions back into atoms by removing electrons
• Turn atoms into ions by adding electrons

Describe oxidation in terms of electrons

• oxidation is gain of electrons
• oxidation is loss of electrons

Why can ionic compounds not conduct electricity when they are solid?

• their electrons are not free to move
• their ions are free to move
• their ions are not free to move
• their electrons are free to move

What type of charge does a metal ion have?

• +
• -

What is an electrolyte?

• A solution of ions

• An ionic compound

• Molten or dissolved ionic compounds

• A combination of electrodes

What is the definition of electrolysis?

• The process of making two redox half equations.

• The process of melting a substance using electricity.

• The process of breaking down a substance using electricity.

• The process of vaporising bromine at the anode.

Where would the MnO4- (aq) Ion migrate?

• Cathode

• Anode

• None of them