Electrolysis Essentials

What is electrolysis?

• Electrolysis is a method of heating substances to high temperatures.

• Electrolysis is the process of using electricity to cause a chemical change, usually to break down a compound.

• Electrolysis is the use of magnets to separate metals from ores.

• Electrolysis is the process of mixing chemicals to create a new compound.

Which of the following is a product of the electrolysis of water? A) Hydrogen B) Oxygen C) Both A and B D) None of the above

• Water vapor

• C) Both A and B

• Oxygen only

• Hydrogen only

Fill in the blank: The process of breaking down a compound using electricity is called __________.

• electrolysis

• electrolysis reaction

• electrochemical synthesis

• electrical decomposition

What is the role of the anode in electrolysis?

• The anode is where oxidation occurs and attracts anions during electrolysis.

• The anode is where reduction occurs and attracts cations during electrolysis.

• The anode is the source of electrons in the electrolysis process.

• The anode is where the electrolyte is stored during electrolysis.

True or False: Electrolysis can only occur in liquid solutions.

• Electrolysis can only occur in gases.

• Electrolysis requires a vacuum environment.

• Electrolysis is only effective in solid materials.

• False

What type of solution is typically used in electrolysis?

• Acidic solution

• Electrolyte solution

• Distilled water

• Saltwater

Name one common use of electrolysis in industry.

• Extraction of aluminum

• Water purification

• Production of steel

• Battery charging

What is produced at the cathode during the electrolysis of copper(II) sulfate solution?

• Copper metal (Cu)

• Hydrogen gas (H2)

• Sulfuric acid (H2SO4)

• Oxygen gas (O2)

Fill in the blank: During electrolysis, positive ions move towards the __________.

• circuit

• cathode

• anode

• battery

What is the term for the substance that conducts electricity in electrolysis?

• Conductor

• Electrolyte

• Resistor

• Insulator