Have an account?
Skip to Content
Build your own quiz
Suggestions for you
20 questions
Show Answers
See Preview
- 1. Multiple Choice
What is observed at each electrode when molten lead(II) bromide is electrolysed using platinum electrodes?
A
B
C
D
- 2. Multiple Choice
The diagram shows the electrolysis of aqueous copper(II) sulfate using copper electrodes.
Which graph shows how the mass of the cathode changes during electrolysis?
- 3. Multiple Choice
An electrical circuit is set up using copper wire.
Which process takes place in the copper wire?
Electrons move along the wire to the negative terminal, positive ions stay in position.
Electrons move along the wire to the positive terminal, positive ions move to the negative terminal.
Electrons move along the wire to the positive terminal, positive ions stay in position.
Negative ions move along the wire to the positive terminal, positive ions move to the negative terminal.
- 4. Multiple ChoiceWhat is electrolysis?breaking down of a compound using a currentmaking a compound using a current
- 5. Multiple ChoiceWhat kind of Electrical Current does Electroysis require?DirectIndirectAnternativeA alternating
- 6. Multiple ChoiceWhich statement correctly describes the 2 electrodes?The anode is negative and the cathode is positiveThe anode and cathode are both positiveThe anode is positive and the cathode is negativeThe anode and cathode are both negative.
- 7. Multiple ChoiceWhat is the name given to the solution that is being electrolysed?Salt solutionElectric solutionMineral solutionElectrolyte
- 8. Multiple ChoiceExplain why the electrolyte has to be a liquid.So the ions can moveSo the electrons can moveSo that it doesn't get too hotSo the fish are ok
- 9. Multiple ChoiceIt is essetial that the electrolyte is a liquid so that...Charged ions can migrate towards the electrodes.Charged ions can migrate towards the electrodes.The solution can move around.The current can flow through it.
- 10. Multiple ChoiceWhat happens at the positive electrode?Positive non-metal ions are attractedPositive metal ions are attractedNegative non-metal ions are attractedNegative metal ions are attracted
- 11. Multiple ChoicePositive ions (cations) will move towards the cathode (-) where they will discharge by....Breaking apartLosing electronsClumping together.Gaining electrons
- 12. Multiple ChoiceWhen NaCl solution is electrolysed what has forms at the anode?HydrogenOxygenChlorineSodium
- 13. Multiple ChoiceWhat does the Cathode (-) do to ions?Give electrons to the Positive ions to turn them back into atomsTake electrons from the positive ions?Turn ions back into atoms by removing electronsTurn atoms into ions by adding electrons
- 14. Multiple ChoiceWhat is the equation to show what happens to Cl ions at the anode.Cl- --> Cl + e-2Cl- --> Cl2 + 2e-Cl2 + 2e- 2Cl-Cl2 + 2e- --> 2Cl-
- 15. Multiple Choice
The diagram shows that two gases are formed when concentrated hydrochloric acid is electrolysed between inert electrodes.
A
B
C
D
- 16. Multiple Choice
Which apparatus could be used to electroplate an iron nail with copper?
A
B
C
D
- 17. Multiple Choice
Which change can take place during electrolysis?
lead(IV) oxide → lead(II) oxide + oxygen
concentrated hydrochloric acid → hydrogen + chlorine
sodium hydroxide + nitric acid → sodium nitrate + water
lead(II) nitrate + sulphuric acid → lead(II) sulphate + nitric acid
- 18. Multiple Choice
Molten lead(II) bromide is electrolysed as shown.
A
B
C
D
- 19. Multiple Choice
Which of these elements could be formed at the anode when a molten salt is electrolysed?
copper
iodine
lithium
strontium
- 20. Multiple Choice
Aluminium is extracted from its oxide by electrolysis. Which words correctly complete the spaces? The oxide is dissolved in ……1…… cryolite and aluminium is deposited at the ……2……
A
B
C
D
- Answer choicesTagsAnswer choicesTags