Structure & Bonding (Double) quiz Loading... 1. Do ionic substances conduct electricity?Only when moltenNo, ionic substances never conduct electricityYes, ionic substances always conduct electricityNot when solid, but they do when either molten or in solutionQuestion 1 of 12 Loading... 2. Explain, in terms of its structure, why graphite can act as a lubricant.Graphite has strong forces of attraction between layers. These layers can slide over each otherGraphite has a low melting point so becomes liquid when heated by frictionGraphite has weak forces of attraction between layers. These layers can slide over each otherGraphite is a smooth metal so creates a surface with little frictionQuestion 2 of 12 Loading... 3. Why do ionic substance have high melting and boiling points?There is a strong electrostatic attraction between similarly charged ions, in a giant structure, which requires a lot of energy to overcomeThere is a weak electrostatic attraction between oppositely charged ions, in a giant structure, which requires little energy to overcomeThere are weak intermolecular forces, in a simple molecular structure, which require little energy to overcomeThere is a strong electrostatic attraction between oppositely charged ions, in a giant structure, which requires a lot of energy to overcomeQuestion 3 of 12 Loading... 4. What is needed to complete this diagram to show the ionic bonding in sodium chloride, NaCl ?1) seven electrons around the chloride 2) one electon around the sodium 3) A charge of +1 on the sodium and -1 on the chloride1) eight electrons around the chloride (seven dots and one cross) 2) A charge of +1 on the sodium and -1 on the chloride1) eight electrons around the chloride (seven dots and one cross) 2) A charge of -1 on the sodium and +1 on the chloride1) seven electrons around the sodium 2) one electon around the chloride 3) A charge of +1 on the sodium and -1 on the chlorideQuestion 4 of 12 Loading... 5. What holds ions together?Ions are held together by a strong electrostatic attraction between the similarly charged ionsIons are held together by a strong electrostatic attraction between the oppositely charged ionsIons are held together by a strong magnetic attraction between the oppositely charged ionsIons are held together by a strong electrostatic attraction between the shared pair of electrons and their nucleiQuestion 5 of 12 Loading... 6. Explain what is meant by electric currentThe rate of flow of ions onlyThe rate of flow of electrons onlyThe rate of flow of charged particles (e.g. of electrons or ions)The rate of flow of elephantsQuestion 6 of 12 Loading... 7. Describe the formation of a covalent bondThe electrostatic attraction between positive metal ions and a sea of delocalised electronsThe transfer of electrons from one atom to anotherThe sharing of a pair of electrons between two nucleiThe sharing of a single electron between two nucleiQuestion 7 of 12 Loading... 8. In the dot and cross diagram of the outer electrons showing the covalent bonding in a molecule of nitrogen (N₂), how many electrons should be shown in areas 1, 2 and 3?There should be three electrons in area 1, four electrons in area 2, and three electrons in area 3There should be two electrons in area 1, six electrons in area 2, and two electrons in area 3There should be two electrons in area 1, four electrons in area 2, and two electrons in area 3There should be four electrons in area 1, two electrons in area 2, and four electrons in area 3Question 8 of 12 Loading... 9. Explain why Silica, SiO₂ is a solid with a high melting pointSilica has a giant metallic structure with weak forces of attraction between layersSilica has a giant covalent structure with many strong covalent bonds that need a lot of energy to breakSilica 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 9 of 12 Loading... 10. Explain how the atoms are held together in a hydrogen bromide moleculeA shared pair of electrons is attracted to one nucleusA pair of electrons is transferred from bromine to hydrogenA shared pair of electrons is attracted to 2 nucleiA single electron is transferred from bromine to hydrogenQuestion 10 of 12 Loading... 11. Explain why nitrogen gas, N₂, is a gas at room temperatureNitrogen has a giant covalent structure with many weak covalent bonds which require little energy to overcomeNitrogen has a simple molecular structure with weak intermolecular forces that require little energy to overcomeNitrogen has a simple molecular structure with strong intermolecular forces that require a lot of energy to overcomeNitrogen has a giant covalent structure with many strong covalent bonds which require a lot of energy to overcomeQuestion 11 of 12 Loading... 12. Why is the melting point of a smaller molecule lower than that of a larger molecule?Larger molecules have fewer attractions between them. These take more energy to overcome.Larger molecules have more attractions between them. These take more energy to overcome.Larger molecules have fewer attractions between them. These take less energy to overcome.Larger molecules have more attractions between them. These take less energy to overcome.Question 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