Electrolysis quiz Loading... 1. Why do covalent compounds (e.g H₂O) not conduct electricity?There is a sea of delocalised electrons that are free to moveThere are weak intermolecular forces that require little energy to breakThere are charged particles that are free to moveThere are no charged particles that are free to moveQuestion 1 of 11 Loading... 2. Do ionic substances conduct electricity?Only when moltenNot when solid, but they do when either molten or in solutionYes, ionic substances always conduct electricityNo, ionic substances never conduct electricityQuestion 2 of 11 Loading... 3. A substance is found not to conduct electricity even when molten. What type of bonding does the substance have?CovalentCovalent or ionicMetallicIonicQuestion 3 of 11 Loading... 4. Why do ionic compounds conduct electricity only when molten or in solution?When solid the ions are held in place. When molten or in solution the ions are free to moveWhen solid the ions are arranged regularly. When molten or in solution the ions are arranged irregularlyWhen solid the ions are free to move. When molten or in solution the ions are held in placeWhen solid the electrons are held in place. When molten or in solution the electrons are free to moveQuestion 4 of 11 Loading... 5. Suggest why a small amount of dilute acid is added to water before it is electrolysedto increase electrical conductivityto remove an oxide coating from the electrodesto lower the pHto slow down the rate of electrolysisQuestion 5 of 11 Loading... 6. In aluminium extraction, what is the ionic half-equation for the reaction at the negative electrode?Al³⁺ + 3e⁻ → AlAl²⁺ + 2e⁻ → AlAl²⁺ → Al + 2e⁻ Al³⁺ → Al + 3e⁻Question 6 of 11 Loading... 7. Are cations positively or negatively charged?negativelyeitherneutralpositively (ca+ions)Question 7 of 11 Loading... 8. Describe the structure of metalsA giant random structure of positive metal ions surrounded by a sea of delocalised electronsA simple regular structure of positive metal ions surrounded by a sea of delocalised electronsA simple random structure of positive metal ions surrounded by a sea of delocalised electronsA giant regular structure of positive metal ions surrounded by a sea of delocalised electronsQuestion 8 of 11 Loading... 9. For what purpose would this equipment be used for in the lab?Testing the electrophoresis of a gel melted to liquid stateTesting the electrical conductivity of ions in solutionThe electrolysis of a solutionThe electrolysis of a molten ionic solultionQuestion 9 of 11 Loading... 10. Explain why metals are good conductors of electricityMetals have layers of ions that can slide over each otherMetals have delocalised electrons which are free to moveMetals have delocalised protons which can moveMetals have positive ions which can moveQuestion 10 of 11 Loading... 11. How many electrons in a hydrogen ion?01n/a (Hydrogen atoms don\'t form ions)2Question 11 of 11 Loading... Related Posts:The entire quiz question bank!The entire quiz question bank (Double only)!Key Calculations quizEquilibria (triple) quizCondensation Polymers quizAlcohols & Carboxylic Acids quiz Hydr0Gen2020-02-16T17:18:38+00:00Categories: Uncategorized|Tags: Quiz, Topic: Electrolysis| Share This Story, Choose Your Platform! FacebookXRedditLinkedInTumblrPinterestVkEmail
