Electrolysis

What is electrolysis?

• breaking down of a compound using a current
• making a compound using a current

What is the name of the positive electrode?

• cathode
• anode

What is the name of the negative electrode?

• cathode
• anode

The negatively charged ions (anions) are attracted to the ________.

• anode

• cathode

The diagram shows the electrolysis of lead(II) bromide using inert electrodes. Why does the bulb only light up when the lead(II) bromide is melted?

• Bromine atoms in lead(II) bromide are converted to ions when it is melted

• Electrons flow through the lead(II) bromide when it is melted

• The ions in lead(II) bromide are mobile charge carriers in the molten state.

• There are no ions in solid lead(II) bromide

Anions get discharged by ________ electrons at the ___________

• gaining, cathode

• losing, anode

• gaining, anode

• losing, cathode

Positive ions (cations) move towards the cathode (-) where they will discharge by....

• Breaking apart

• Losing electrons

• Clumping together.

• Gaining electrons

What is the name given to the solution that is being electrolysed?

• Salt solution
• Electric solution
• Mineral solution
• Electrolyte

___________ electrode is an inert electrode.

• Copper

• Iron

• Carbon

• Zinc

What particle carries the charge in the wire?

• electron
• proton
• ion
• atom