Electrolysis and Ionic Compounds Quiz

What is defined as ionic compounds in the molten state or dissolved in water?

• Conductors

• Insulators

• Electrodes

• Electrolytes

Electrolysis is a process in which electrical energy from a direct current supply decomposes which type of substance?

• Covalent compounds

• Electrolytes

• Metals

• Non-metals

During electrolysis, positively charged ions are called cations. To which electrode do they migrate?

• The negatively charged cathode

• The positively charged anode

• Either electrode randomly

• They remain stationary

During electrolysis, negatively charged ions are called anions. To which electrode do they migrate?

• The negatively charged cathode

• The positively charged anode

• Either electrode randomly

• They remain stationary

What happens to ions when they are attracted to the electrodes during electrolysis?

• They return to the solution unchanged.

• They form new ionic compounds.

• They produce elements.

• They decompose the electrodes.

According to the sources, what process is defined as the loss of electrons?

• Reduction

• Neutralisation

• Oxidation

• Electrolysis

According to the sources, what process is defined as the gain of electrons?

• Reduction

• Neutralisation

• Oxidation

• Electrolysis

Which statement correctly describes where oxidation and reduction occur during electrolysis?

• Oxidation occurs at the cathode and reduction occurs at the anode.

• Reduction occurs at the anode and oxidation occurs at the cathode.

• Oxidation occurs at the anode and reduction occurs at the cathode.

• Both oxidation and reduction occur at the cathode.

In half-equations, how are electrons represented?

• e+

• H+

• O2-

• e-

Which general ionic equation represents the reaction occurring at the negative electrode (cathode), where positive ions (cations) are reduced?

• X- -> e- + X

• X+ -> e- + X

• X+ + e- -> X

• X- + e- -> X