Structure & Bonding (Double) quiz Loading... 1. When are ions attracted to each other?When the ions are very smallWhen the ions are the same sizeWhen the ions have the same chargeWhen the ions are oppositely chargedQuestion 1 of 12 Loading... 2. Explain why magnesium oxide has a higher melting point than sodium chloride.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.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.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 2 of 12 Loading... 3. If a substance has a simple molecular structure, what physical state might it be at room temperature?SolidSolid or liquidGas or liquidAny stateQuestion 3 of 12 Loading... 4. 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 4 of 12 Loading... 5. How can atoms get a full outer shell?Either the transfer (covalent) or sharing (ionic) of electronsOnly transfer (ionic) of electronsEither the transfer (ionic) or sharing (covalent) of electronsConversion of electrons to protonsQuestion 5 of 12 Loading... 6. Why is the melting point of a smaller molecule lower than that of a larger molecule?Larger molecules have more attractions between them. These take more energy to overcome.Larger molecules have more attractions between them. These take less energy to overcome.Larger molecules have fewer attractions between them. These take less energy to overcome.Larger molecules have fewer attractions between them. These take more energy to overcome.Question 6 of 12 Loading... 7. When can ionic substances conduct electricity?NeverOnly when moltenIn any stateWhen molten or dissolvedQuestion 7 of 12 Loading... 8. Typically, do covalent substances conduct electricity?NoDepends on conditions (e.g. pressure, temperature etc.)Depends on the substanceYesQuestion 8 of 12 Loading... 9. Describe the formation of a covalent bondThe 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 nucleiThe transfer of electrons from one atom to anotherQuestion 9 of 12 Loading... 10. Explain, in terms of its structure, why graphite can conduct electricity.Graphite has layers which can easily slide over each otherGraphite has positive ions which can moveGraphite has delocalised electrons which can moveGraphite has delocalised protons which can moveQuestion 10 of 12 Loading... 11. Explain how the atoms are held together in a hydrogen bromide moleculeA shared pair of electrons is attracted to one nucleusA shared pair of electrons is attracted to 2 nucleiA single electron is transferred from bromine to hydrogenA pair of electrons is transferred from bromine to hydrogenQuestion 11 of 12 Loading... 12. In the dot and cross diagram of the outer electrons showing the covalent bonding of carbon dioxide (CO₂), how many electrons should be shown in areas 1, 2, 3 and 4?There should be two electrons in each of the areas 1, 2, 3 and 4There should be zero electrons in each of the areas 1 and 4, and four electrons in areas 2, 3There should be six electrons in each of the areas 1 and 4, and two electrons in areas 2, 3There should be four electrons in each of the areas 1, 2, 3 and 4Question 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! FacebookXRedditLinkedInTumblrPinterestVkEmail
