Electrolysis

What is the process called when electrical current causes chemical changes in a liquid?

• Electrolysis
• Electrophoresis
• Electromagnetism
• Electrostatics

What type of ions are attracted to the cathode during electrolysis?

• Cations
• Neutrons
• Anions
• Protons

What is the positive electrode in electrolysis called?

• Cathode
• Electrode
• Anode
• Conductor

What do we call a liquid that can conduct electricity due to the presence of free-moving ions?

• Conductance fluid
• Electrolyte
• Solvent
• Ionic solution

What happens to sodium ions when current flows through molten sodium chloride?

• They are attracted to the negative electrode.
• They stay at rest.
• They evaporate into gas.
• They are attracted to the positive electrode.

At what temperature does sodium chloride begin to melt?

• 500 degrees Celsius
• 650 degrees Celsius
• 801 degrees Celsius
• 1000 degrees Celsius

What is the role of electrodes in electrolysis?

• To mix the solution.
• To produce light.
• To conduct electrical current into the electrolyte.
• To cool the liquid.

What do we call negatively charged ions during electrolysis?

• Anions
• Protons
• Cations
• Electrons

What can affect the rate of ion flow in an electrolyte?

• Concentration and potential difference
• Type of liquid only
• Temperature only
• Volume only

What happens when electrons flow towards the positive terminal of a battery?

• They lose energy.
• They produce heat only.
• They cause a chemical reaction.
• They create an electrical current.