Structure & Bonding (Double) quiz Loading... 1. What is needed to complete this diagram to show the ionic bonding in potassium oxide, K₂O ?1) eight electrons around the oxide (six dots and two cross) 2) A charge of +1 on the potassium and -2 on the oxide 3) A second potassium ion the same as the first1) eight electrons around the potassium (any combination of dots and one crosses) 2) A charge of +2 on the oxide and -1 on the potassium 3) A second potassium ion the same as the first1) eight electrons around the oxide (six dots and two cross) 2) A charge of +1 on the potassium and -2 on the oxide 3) A second oxide ion the same as the first1) eight electrons around the oxide (six dots and two cross) 2) A charge of +2 on the potassium and -1 on the oxide 3) A second potassium ion the same as the firstQuestion 1 of 12 Loading... 2. Describe the formation of a covalent bondThe transfer of electrons from one atom to anotherThe electrostatic attraction between positive metal ions and a sea of delocalised electronsThe sharing of a pair of electrons between two nucleiThe sharing of a single electron between two nucleiQuestion 2 of 12 Loading... 3. Explain why nitrogen gas, N₂, is a gas at room temperatureNitrogen has a giant covalent structure with many strong covalent bonds which require a lot of energy to overcomeNitrogen has a simple molecular structure with weak intermolecular forces that require little energy to overcomeNitrogen has a giant covalent structure with many weak covalent bonds which require little energy to overcomeNitrogen has a simple molecular structure with strong intermolecular forces that require a lot of energy to overcomeQuestion 3 of 12 Loading... 4. A substance is found not to conduct electricity even when molten. What type of bonding does the substance have?MetallicCovalent or ionicCovalentIonicQuestion 4 of 12 Loading... 5. Do ionic substances conduct electricity?Yes, ionic substances always conduct electricityOnly when moltenNot when solid, but they do when either molten or in solutionNo, ionic substances never conduct electricityQuestion 5 of 12 Loading... 6. In the dot and cross diagram of the outer electrons showing the covalent bonding in a molecule of chlorine (Cl₂), how many electrons should be shown in areas 1, 2 and 3?There should be two electrons in area 2 and six in each of areas 1 and 3There should be four electrons in area 2 and three in each of areas 1 and 3There should be two electrons in area 2 and seven in each of areas 1 and 3There should be four electrons in each of areas 1, 2 and 3Question 6 of 12 Loading... 7. Explain why Silica, SiO₂ is a solid with a high melting pointSilica has a giant covalent structure with many strong covalent bonds that need a lot of energy to breakSilica has a giant metallic structure with weak forces of attraction between layersSilica has a simple molecular structure with strong intermolecular forces that require a lot of energy to overcomeSilica has a simple molecular structure with weak intermolecular forces that require little energy to overcomeQuestion 7 of 12 Loading... 8. Explain why magnesium oxide has a higher melting point than sodium chloride.Mg²⁺ and O²⁻ ions are larger than sodium and chloride therefore the electrostatic forces between the ions are much stronger. This requires more energy to break.Mg²⁺ and O²⁻ ions have a higher charge than sodium and chloride therefore the electrostatic forces between the ions are much stronger. This requires more energy to break.Sodium chloride is a simple molecular substance so there are only weak intermolecular forces which require little energy to breakMagnesium and oxygen are more reactive elementsQuestion 8 of 12 Loading... 9. Explain, in terms of its structure, why graphite can conduct electricity.Graphite has delocalised protons which can moveGraphite has delocalised electrons which can moveGraphite has positive ions which can moveGraphite has layers which can easily slide over each otherQuestion 9 of 12 Loading... 10. State the fomula for the two ions in iron (II) sulfideFe³⁺ and S³⁻Fe⁺ and S⁻Fe²⁺ and S²⁻Fe³⁺ and S²⁻Question 10 of 12 Loading... 11. Do larger molecules have higher or lower boiling points than smaller molecules?Size doesn\'t affect boiling pointHigherLowerIt depends on which atoms are presentQuestion 11 of 12 Loading... 12. Explain how the atoms are held together in a hydrogen bromide moleculeA single electron is transferred from bromine to hydrogenA pair of electrons is transferred from bromine to hydrogenA shared pair of electrons is attracted to 2 nucleiA shared pair of electrons is attracted to one nucleusQuestion 12 of 12 Loading... Related Posts:The entire quiz question bank!The entire quiz question bank (Double only)!Key Calculations quizEquilibria (triple) quizCondensation Polymers quizElectrolysis quiz Hydr0Gen2020-03-11T12:55:09+00:00Categories: Uncategorized|Tags: Quiz, Topic: Structure & Bonding| Share This Story, Choose Your Platform! FacebookTwitterRedditLinkedInTumblrPinterestVkEmail
