Free Printable A Level Electrochemical Cells

Worksheets

A Level Electrochemical Cells

Total questions: 30

Worksheet time: 44mins

Name

Class

Date

Reduction happens at the

anode

cathode

salt bridge

voltmeter

Oxidation happens at the

anode

cathode

salt bridge

voltmeter

Metal A is more reactive than metal B. Which statement is correct?

Electrons flow in the external circuit from A to B

Positive ions flow through salt bridge from A to B

Positive ions flow in external circuit from B to A.

Electrons flow through salt bridge from B to A

In which direction does electricity flow in a voltaic cell (battery)?

Electrons flow from the cathode to the anode

Electrons flow from left to right

Electrons flow from anode to cathode

Electrons flow from right to left

What reaction occurs at the anode?

Ag⁺ + e^- →Ag

Ag → Ag⁺ + e^-

Ni²⁺ + 2e^- → Ni

Ni → Ni²⁺ + 2e^-

Which direction do the electrons flow in wire X and which metal is oxidized?

Which statement is correct when the cell produces electricity?

Magnesium atoms lose electrons

Mass of the iron electrode decreases.

Electrons flow from the iron half-cell to the magnesium half-cell.

Negative ion flow from magnesium half-cell to iron half-cell

What is the function of Y in cell below?

To complete the circuit

To allow flow of electrons between both cells

To allow flow of ions

To connect both half cells

This electrode in a voltaic cell gains mass

anode

cathode

10.

Reactions in voltaic cells are

spontaneous, redox reactions

non-spontaneous, redox reactions

spontaneous, non-redox reactions

non-spontaneous, non-redox reactions

11.

Which of the following metals is the most reactive according to the reactivity series of metals.

Copper

Zinc

Magnesium

Lithium

12.

What are produced at positive/negative electrodes during electrolysis of molten NaCI?

13.

What occurs during electrolysis of a molten salt?

Electricity is produced by a spontaneous redox reaction

Electricity cause a non-spontaneous redox reaction to occur

Electrons flow through the molten salt

Electrons are removed from both ions of the molten salt

14.

Object is electroplated with copper using copper(II) sulfate. Which statement is correct?

Positive electrode increases in mass

Concentration of Cu²⁺ ions in solution decreases

Reduction occurs at positive electrode

Reaction at negative electrode is Cu²⁺ + 2e^– → Cu

15.

What is the name of the positive electrode in an electrolytic cell?

cathode

anode

16.

What is the name of the negative electrode in an electrolytic cell ?

cathode

anode

17.

The electrode connected to the positive terminal of a battery is __________.

cathode

anode

18.

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

19.

The anode is where oxidation occurs in...

A Galvanic Cell

A Electrolytic Cell

Both Galvanic and Electrolytic cells

20.

What happens when molten NaCI is electrolysed in electrolytic cell?

Chlorine is produced at positive electrode

Sodium ions lose electrons at negative electrode

Electrons flow through liquid from -ve electrode to +ve electrode

Oxidation occurs at -ve electrode and reduction at +ve electrode

21.

A student decided to silver-plate a locker key using the apparatus shown. In this cell, the key is the

anode and is connected to the positive terminal of the power supply

anode and is connected to the negative terminal of the power supply

cathode and is connected to the positive terminal of the power supply

cathode and is connected to the negative terminal of the power supply

22.

Flow of electrons

From cathode to anode

From anode to cathode

23.

The most reactive metal will be found at the

anode

cathode

24.

The least reactive metal will be at the

anode

cathode

25.

Which would be an accurate half-equation at the anode for aluminum?

Al³⁺ + 3e^- --> Al

Al --> Al³⁺ + 3e^-

Al³⁺ --> Al + 3e^-

Al + 3e^- --> Al³⁺

26.

Which would be an accurate half-equation at the cathode for aluminum?

Al³⁺ + 3e^- --> Al

Al --> Al³⁺ + 3e^-

Al³⁺ --> Al + 3e^-

Al + 3e^- --> Al³⁺

27.

Which would be an accurate half-equation for copper at the cathode?

Cu⁺ + e^- --> Cu

Cu--> Cu⁺ + e^-

Cu⁺ --> Cu + e^-

Cu + e^- --> Cu⁺

28.

Which would be an accurate half-equation for copper at the anode?

Cu⁺ + e^- --> Cu

Cu--> Cu⁺ + e^-

Cu⁺ --> Cu + e^-

Cu + e^- --> Cu⁺

29.

Which cell is not spontaneous?

voltaic

electrolytic

30.

What reaction occurs at the anode?

Ag⁺ + e^- →Ag

Ag → Ag⁺ + e^-

Ni²⁺ + 2e^- → Ni

Ni → Ni²⁺ + 2e^-

100 %

A Level Electrochemical Cells

Total questions: 30

Worksheet time: 44mins

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