Electrolysis Quiz

What is electrolysis?

• A process where electricity is used to make a chemical change happen

• A process where chemicals are used to generate electricity

• A process where chemicals are used to break down compounds

• A process where electricity is used to generate heat

What is the purpose of electrolysis?

• To break down compounds into their elemental components

• To generate electricity

• To create new chemical compounds

• To produce heat

Which compound is broken down into sodium metal and chlorine gas during electrolysis?

• Sodium chloride

• Water

• Hydrogen peroxide

• Carbon dioxide

What is the balanced equation for the electrolysis of sodium chloride?

• 2NaCl -> 2Na + Cl2

• NaCl -> Na + Cl

• NaCl -> Na2 + Cl2

• 2NaCl -> Na2 + Cl

Why is chlorine written as Cl2 in the balanced equation?

• Because chlorine is a diatomic element

• Because chlorine is a monatomic element

• Because chlorine is a triatomic element

• Because chlorine is a tetratomic element

What is the purpose of the battery in electrolysis?

• To provide electrical energy to force the chemical change

• To provide heat to melt the compounds

• To provide oxygen for the reaction

• To provide a catalyst for the reaction

What is the name of the device used for electrolysis?

• Electrolytic cell

• Electrochemical cell

• Electrolysis chamber

• Electrolysis container

What is the role of the cathode in electrolysis?

• To push out electrons and undergo reduction

• To pull in electrons and undergo oxidation

• To push out electrons and undergo oxidation

• To pull in electrons and undergo reduction

What is the role of the anode in electrolysis?

• To pull in electrons and undergo oxidation

• To push out electrons and undergo reduction

• To pull in electrons and undergo reduction

• To push out electrons and undergo oxidation

What happens to the oxidation number of sodium during electrolysis?

• It goes from +1 to 0

• It goes from 0 to +1

• It stays the same

• It goes from -1 to 0