Structure & Bonding (Triple) quiz Loading... 1. Why do ionic compounds conduct electricity only when molten or in solution?When 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 moveWhen 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 irregularlyQuestion 1 of 20 Loading... 2. What is an alloy?An alloy is a mixture of a metal and one or more elements, usually other metals or hydrogenAn alloy is a mixture of a non-metal and one or more elements, usually other metals or hydrogenAn alloy is a mixture of a non-metal and one or more elements, usually other metals or carbonAn alloy is a mixture of a metal and one or more elements, usually other metals or carbonQuestion 2 of 20 Loading... 3. A student has drawn a diagram to show the structure of a metallic solid, but forgotten to label the parts. Which of the following correctly lists those parts?Positive metal ions. Delocalised electrons. Weak intermolecular forces.Oppositely charged ions in a sea of delocalised electrons. Giant structure.Positive metal ions. Delocalised electrons. Giant Structure.Positive metal ions. Delocalised negative ions. Giant Structure.Question 3 of 20 Loading... 4. What is needed to complete this diagram to show the ionic bonding in magnesium chloride, MgCl₂ ?1) eight electrons around the chloride (seven dots and one cross) 2) A charge of +2 on the magnesium and -1 on the chloride 3) A second chloride ion the same as the first1) eight electrons around the magnesium (any combination of dots and one crosses) 2) A charge of +2 on the magnesium and -1 on the chloride 3) A second chloride ion the same as the first1) eight electrons around the chloride (seven dots and one cross) 2) A charge of +1 on the magnesium and -2 on the chloride 3) A second chloride ion the same as the first1) eight electrons around the chloride (seven dots and one cross) 2) A charge of +2 on the magnesium and -1 on the chloride 3) A second magensium ion the same as the firstQuestion 4 of 20 Loading... 5. State 2 properties that makes aluminium suitable for manufacturing aircraftLow density and resists corrosionLight and reactiveLight and resists corrosionLow density and reactiveQuestion 5 of 20 Loading... 6. Why is the boiling point of a larger molecule higher than that of a smaller molecule?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.Larger molecules have more attractions between them. These take more energy to overcome.Larger molecules have fewer attractions between them. These take more energy to overcome.Question 6 of 20 Loading... 7. Why do metals have high melting and boiling points?There is a strong electrostatic attraction between an irregular structure of positive metal ions and a sea of delocalised electronsThere is a weak electrostatic attraction between a regular structure of positive metal ions and a sea of delocalised electronsThere is a strong electrostatic attraction between a regular structure of negative metal ions and a sea of delocalised protonsThere is a strong electrostatic attraction between a regular structure of positive metal ions and a sea of delocalised electronsQuestion 7 of 20 Loading... 8. Describe the bonding in a metalThe strong electrostatic attraction between a shared pair of electrons and two nucleiThe strong electrostatic attraction between a regular structure of positive ions and a sea of delocalised electronsThe strong electrostatic attraction between oppositely charged ionsThe strong electrostatic attraction between protons and neutronsQuestion 8 of 20 Loading... 9. 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 is a smooth metal so creates a surface with little frictionGraphite has weak forces of attraction between layers. These layers can slide over each otherQuestion 9 of 20 Loading... 10. Explain what is meant by electric currentThe rate of flow of elephantsThe rate of flow of charged particles (e.g. of electrons or ions)The rate of flow of electrons onlyThe rate of flow of ions onlyQuestion 10 of 20 Loading... 11. What holds ions together?Ions are held together by a strong electrostatic attraction between the oppositely charged ionsIons are held together by a strong electrostatic attraction between the similarly 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 11 of 20 Loading... 12. 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 four electrons in area 1, two electrons in area 2, and four electrons in area 3There 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, four electrons in area 2, and two electrons in area 3There should be two electrons in area 1, six electrons in area 2, and two electrons in area 3Question 12 of 20 Loading... 13. Why are alloys harder than pure metals?Alloys often contain carbon which is a very hard elementAlloys are more magnetic than pure metals so when they are formed the ions are packed closer togetherAlloys have higher melting points because they are mixtures so are harderAlloys contain different sized positive ions, so there are no layers of ions to slide over each otherQuestion 13 of 20 Loading... 14. Suggest why buckminsterfullerene, C₆₀, has a low melting point.Buckminsterfullerene has a simple molecular structure with strong intermolecular forces that require a lot of energy to overcomeBuckminsterfullerene has a giant covalent structure with many strong covalent bonds that need a lot of energy to breakBuckminsterfullerene has a simple molecular structure with weak intermolecular forces that require little energy to overcomeBuckminsterfullerene has a giant metallic structure with weak forces of attraction between layersQuestion 14 of 20 Loading... 15. Explain, in terms of structure and bonding, why magnesium oxide has a higher melting point than sodium chloride Magnesium and oxygen are more reactive elementsSodium chloride is a simple molecular substance so there are only weak intermolecular forces which require little energy to breakMg²⁺ 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.NaCl and MgO both have a giant ionic structure with strong electrostatic forces between oppositely charged ions. The Ions in MgO have a charge of 2 and -2, but in NaCl the charges are 1 and -1. So the bonds in MgO require more energy to breakQuestion 15 of 20 Loading... 16. Give the definition of a covalent bondStrong electrostatic attraction between a shared pair of electrons and two nucleiStrong electrostatic attraction between a postive ion and a sea of delocalised positive ionsStrong electrostatic attraction between oppositely charged ionsStrong electrostatic attraction between a shared pair of electrons and a nucleusQuestion 16 of 20 Loading... 17. Describe the formation of a covalent bondThe transfer of electrons from one atom to anotherThe sharing of a pair of electrons between two nucleiThe sharing of a single electron between two nucleiThe electrostatic attraction between positive metal ions and a sea of delocalised electronsQuestion 17 of 20 Loading... 18. 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 18 of 20 Loading... 19. State whether covalent substances conduct electricity, and explain whyOnly when molten, because there are charged particles that are free to moveYes, because there are charged particles that are free to moveNo. Because there are no charged particles that are free to moveOnly under pressure, because there are charged particles that are free to moveQuestion 19 of 20 Loading... 20. Explain why methane gas, CH₄, is a gas at room temperatureMethane has a simple molecular structure with strong intermolecular forces that require a lot of energy to overcomeMethane has a simple molecular structure with weak intermolecular forces that require little energy to overcomeMethane has a giant covalent structure with many weak covalent bonds which require little energy to overcomeMethane has a giant covalent structure with many strong covalent bonds which require a lot of energy to overcomeQuestion 20 of 20 Loading... Related Posts:The entire quiz question bank!The entire quiz question bank (Double only)!Key Calculations quizEquilibria (triple) quizCondensation Polymers quizElectrolysis quiz Hydr0Gen2020-02-16T12:32:52+00:00Categories: Uncategorized|Tags: Quiz, Topic: Structure & Bonding| Share This Story, Choose Your Platform! FacebookXRedditLinkedInTumblrPinterestVkEmail