Fill in the blanks:

(a) Powdered sodium chloride (common salt) does not conduct an electric current, but it does so when …………… or when …………… .

(b) Molten lead bromide conducts electricity. It is called an ……………. It is composed of lead …………… and bromide ……………. The lead ions are …………… charged and are called ……………. The bromide …………… are …………… charged and are called …………….

(c) Substances which conduct electricity in the solid state are generally …………….

(d) The electron releasing tendency of zinc is …………… than that of copper.

(e) A solution of HCl gas in water conducts electricity because ……………, but a solution of HCl gas in toluene does not conduct an electric current because …………….

(f) Pure water consists entirely of …………… (ions/molecules).

(g) We can expect that pure water …………… (will/will not) normally conduct electricity.

(h) Electrolysis is the passage of ……………. (electricity/electrons) through a liquid or a solution accompanied by a ……………. (physical/chemical) change.

(a) Powdered sodium chloride (common salt) does not conduct an electric current, but it does so when in aqueous state or when in molten state .

(b) Molten lead bromide conducts electricity. It is called an electrolyte. It is composed of lead ions and bromide ions. The lead ions are positively charged and are called cations. The bromide ions are negatively charged and are called anions.

(c) Substances which conduct electricity in the solid state are generally metals .

(d) The electron releasing tendency of zinc is more than that of copper.

(e) A solution of HCl gas in water conducts electricity because it ionizes , but a solution of HCl gas in toluene does not conduct an electric current because it does not ionize.

(f) Pure water consists entirely of molecules

(g) We can expect that pure water will not normally conduct electricity.

(h) Electrolysis is the passage of electricity through a liquid or a solution accompanied by a chemical change.