Free Printable electrolysis

Worksheets

electrolysis

Total questions: 14

Worksheet time: 4mins

Name

Class

Date

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 ions are present in molten aluminium oxide?

Al³⁺, O^2-, H⁺, OH^-

Al³⁺, O^2-

Al³⁺, OH^-

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

Salt solution

Electric solution

Mineral solution

Electrolyte

10.

Explain why the electrolyte has to be a liquid.

So the ions can move

So the electrons can move

So that it doesn't get too hot

So the fish are ok

11.

What happens at the positive electrode?

Positive non-metal ions are attracted

Positive metal ions are attracted

Negative non-metal ions are attracted

Negative metal ions are attracted

12.

___________ electrode is an inert electrode.

Copper

Iron

Carbon

Zinc

13.

What particle carries the charge in the wire?

electron

proton

ion

atom

14.

What particle carries the charge in the electrolyte?

electron

proton

ion

atom

100 %

electrolysis

Total questions: 14

Worksheet time: 4mins

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