Have an account?
Skip to Content
Build your own quiz
Suggestions for you
20 questions
Show Answers
See Preview
- 1. Multiple Choice
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 meltedElectrons flow through the lead(II) bromide when it is meltedThe ions in lead(II) bromide are free to move when it is meltedThere are no ions in solid lead(II) bromide - 2. Multiple ChoiceThe electrode connected to the positive terminal of a battery is __________.cathodeanode
- 3. Multiple ChoiceThe negatively charged ions migrate toward the ________.anodecathode
- 4. Multiple ChoiceWhat is electrolysis?breaking down of a compound using a currentmaking a compound using a current
- 5. 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.
- 6. Multiple ChoiceWhat is the name given to the solution that is being electrolysed?Salt solutionElectric solutionMineral solutionElectrolyte
- 7. 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
- 8. 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
- 9. Multiple ChoicePositive ions (cations) will move towards the cathode (-) where they will discharge by....Breaking apartLosing electronsClumping together.Gaining electrons
- 10. 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
- 11. 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-
- 12. Multiple Choice
Anions get discharged by ________ electrons at the ___________
gaining, cathode
losing, anode
gaining, anode
losing, cathode
- 13. Multiple Choice
Positive ions (cations) move towards the cathode (-) where they will discharge by....
Breaking apart
Losing electrons
Clumping together.
Gaining electrons
- 14. Multiple Choice
What ions are present in molten aluminium oxide?
Al3+, O2-, H+, OH-
Al3+, O2-
Al3+, OH-
- 15. Multiple Choice
Which electrode is inert electrode.
Copper
Iron
Carbon
Zinc
- 16. Multiple Choice
Oxidation is loss of electron. Where does oxidation take place during electrolysis.
At anode
In the solution
At the circuit
At cathode
- 17. Multiple ChoiceWhich of the following substances conducts electricity in both the solid and liquid states?Paraffin waxPotassiumPotassium chlorideSulfurVenus
- 18. Multiple ChoiceMolten lead(II) bromide is able to conduct electricity due to the presence offree atomsmolten leadmobile ionsbromine gas
- 19. Multiple Choice
reduction is ...
loss of electrons
gain of electrons
- 20. Multiple Choice
Electrodes are commonly made of ...
graphite
copper
zinc
sodium
- Answer choicesTagsAnswer choicesTags