ELECTROLYSIS YEAR 8 GRANGE SCHOOL

which of these statements best describes electrolysis

• thermal decomposition of a substance using alternating current electricity

• chemical decomposition of a substance using alternating current electricity

• thermal decomposition of a substance using direct current electricity

• chemical decomposition of a substance using direct current electricity

Answer explanation

electrolysis is the chemical decomposition of a substance using direct current and not alternating current.

What is another name for the positive electrode in an electrolysis cell?

• cathode

• anode

• electrode

• node

Answer explanation

the positive electrode in an electrolysis cell is called the anode

what is the name of the negative electrode in an electrolysis cell?

• anode

• cathode

• node

• electrode

the chemical substance that is decomposed by the passage of electricity is in electrolysis is appropriately called.....

• conductor

• insulator

• electrolyte

• electrode

in an electrolysis cell, the positive terminal of the battery is connected to which electrode?

• node

• cathode

• anode

• internode

in electrolysis, the negative terminal of the battery is connected to which electrode?

• node

• anode

• cathode

• internode

at which electrode, is hydrogen gas formed during electrolysis?

• anode

• cathode

• node

• antinode

in the electrolysis of molten lead bromide. At which electrode is the molten lead formed?

• node

• antinode

• anode

• cathode

in the electrolysis of acidified water. What gas bubbles is observed at the anode?

• hydrogen gas

• chlorine gas

• bromine gas

• oxygen gas

one of these substances is not suitable to be used as electrode.

• sheet of platinum

• carbon rods

• copper plate

• sodium sheet