Electrolysis and Ion Behavior

What is electrolysis?

• The flow of electrical current through a solid, causing physical changes.

• The flow of electrical current through a liquid, causing chemical changes.

• The flow of heat through a liquid, causing physical changes.

• The flow of heat through a solid, causing chemical changes.

Which types of liquids can conduct electricity for electrolysis?

• Only pure water.

• Only molten metals.

• Molten ionic compounds or aqueous solutions.

• Any liquid at room temperature.

At what approximate temperature does sodium chloride melt?

• 100°C

• 500°C

• 801°C

• 1500°C

What types of ions are present in molten sodium chloride?

• Only positive sodium ions.

• Only negative chloride ions.

• Free-flowing positive sodium ions and negative chloride ions.

• Neutral sodium and chlorine atoms.

What are positive ions called?

• Anions

• Cations

• Electrons

• Protons

What are negative ions called?

• Cations

• Anions

• Neutrons

• Protons

What are the electrical conductors inserted into the liquid during electrolysis called?

• Conductors

• Wires

• Electrodes

• Terminals

To which electrode are cations attracted during electrolysis?

• The anode

• The cathode

• Both electrodes equally

• Neither electrode

To which electrode are anions attracted during electrolysis?

• The cathode

• The anode

• Both electrodes equally

• Neither electrode

What is the charge of the anode in an electrolytic cell?

• Negative

• Positive

• Neutral

• Variable