Define the term electrolysis.

What is an electrolyte? Give one example.

Define the term electrode.

What is the anode?

What is the cathode?

Study the circuit diagram below. Identify the anode (A), cathode (C), electrolyte (E), and state which electrode is connected to the negative terminal of the battery.

Which electrode is connected to the negative terminal of the power supply?

In an electrolysis circuit, ions move toward the electrodes. Which type of ion moves toward the cathode, and which moves toward the anode?

Name two suitable materials that are commonly used to make inert electrodes in electrolysis experiments.

During electrolysis, at which electrode does oxidation occur, and at which does reduction occur? State what happens to ions at each electrode.

Explain why solid ionic compounds cannot act as electrolytes.

Explain why an ionic compound can act as an electrolyte when it is (a) molten and (b) dissolved in water.

A student claims that sugar solution can be used as an electrolyte because it dissolves in water. Evaluate this claim.

Lead(II) bromide is used in electrolysis experiments. Explain why it must be melted before electrolysis can take place.

Compare the ability of the following to act as electrolytes: (i) solid sodium chloride, (ii) molten sodium chloride, (iii) aqueous sodium chloride. In each case, explain your answer.