Quiz on Electrolysis and Oxidation

What is electrolysis?

• A method used to break a compound using electricity

• A method used to combine compounds using heat

• A method used to separate compounds using magnets

• A method used to dissolve compounds in water

Which of the following is the correct definition of oxidation?

• Gain of electrons

• Loss of electrons

• Gain of protons

• Loss of protons

Which of the following is the correct definition of reduction?

• Gain of electrons

• Loss of electrons

• Gain of protons

• Loss of protons

Which type of element is more likely to be oxidized?

• Non-metals

• Metals

• Noble gases

• Halogens

Which type of element is more likely to be reduced?

• Non-metals

• Metals

• Noble gases

• Alkali metals

What is the positive electrode in electrolysis called?

• Cathode

• Anode

• Electrolyte

• Electrode

What is the negative electrode in electrolysis called?

• Cathode

• Anode

• Electrolyte

• Electrode

Which of the following substances can be electrolyzed?

• Carbon dioxide

• Copper bromide

• Graphite

• Carbon chloride

Why can't carbon dioxide be electrolyzed?

• It is an ionic compound

• It is a covalent compound

• It is a metallic compound

• It is a giant covalent structure

Which of the following equations correctly shows the oxidation of calcium?

• Ca (s) → Ca+ (aq) + e

• Ca (s) → Ca2+ (aq) + 2e

• Ca (s) → Ca3+ (aq) + 3e

• Ca (s) → Ca- (aq) + e