{
  "id": "ac16bd3e-0ebb-54d9-890d-d9c33602ba2f",
  "slug": "s2-4-from-models-to-materials",
  "title": "S2.4 From models to materials",
  "course": "IB Chemistry",
  "level": "SL",
  "syllabusCode": "S2.4",
  "questionCount": 14,
  "page": "https://splycr.com/ib-chemistry/s2-4-from-models-to-materials",
  "data": "https://splycr.com/library/s2-4-from-models-to-materials.json",
  "play": "https://splycr.com/?set=ac16bd3e-0ebb-54d9-890d-d9c33602ba2f",
  "section": {
    "name": "Structure 2: Models of bonding and structure",
    "page": "https://splycr.com/ib-chemistry/models-of-bonding-and-structure"
  },
  "source": {
    "name": "Biology by Bradford",
    "href": "https://www.biologybybradford.com",
    "note": "Written for the splycr library by Biology by Bradford."
  },
  "questions": [
    {
      "number": 1,
      "question": "Diagram placing a compound by average electronegativity and electronegativity difference?",
      "answer": "Bonding triangle",
      "wrongOptions": [
        "Periodic table",
        "Energy cycle",
        "Phase diagram"
      ]
    },
    {
      "number": 2,
      "question": "Quantity on the vertical axis of the bonding triangle?",
      "answer": "Electronegativity difference",
      "wrongOptions": [
        "Average electronegativity",
        "Atomic radius",
        "Ionisation energy"
      ]
    },
    {
      "number": 3,
      "question": "Bonding type for a large ΔEN, such as in CsF?",
      "answer": "Ionic",
      "wrongOptions": [
        "Metallic",
        "Covalent",
        "Polar covalent"
      ]
    },
    {
      "number": 4,
      "question": "Bonding type for a low average EN and a small ΔEN?",
      "answer": "Metallic",
      "wrongOptions": [
        "Ionic",
        "Covalent",
        "Polar covalent"
      ]
    },
    {
      "number": 5,
      "question": "Bonding type for a high average EN and a small ΔEN?",
      "answer": "Covalent",
      "wrongOptions": [
        "Ionic",
        "Metallic",
        "Intermolecular"
      ]
    },
    {
      "number": 6,
      "question": "Mixture of a metal with other elements, usually metals?",
      "answer": "Alloy",
      "wrongOptions": [
        "Compound",
        "Polymer",
        "Ore"
      ]
    },
    {
      "number": 7,
      "question": "Alloys are harder than pure metals because different-sized atoms…?",
      "answer": "Prevent layers sliding",
      "wrongOptions": [
        "Increase electron density",
        "Form ionic bonds",
        "Remove delocalised electrons"
      ]
    },
    {
      "number": 8,
      "question": "Alloy of iron and carbon?",
      "answer": "Steel",
      "wrongOptions": [
        "Brass",
        "Bronze",
        "Solder"
      ]
    },
    {
      "number": 9,
      "question": "Alloy of copper and zinc?",
      "answer": "Brass",
      "wrongOptions": [
        "Bronze",
        "Steel",
        "Solder"
      ]
    },
    {
      "number": 10,
      "question": "Small molecules that join together to form a polymer?",
      "answer": "Monomers",
      "wrongOptions": [
        "Isomers",
        "Dimers",
        "Oligomers"
      ]
    },
    {
      "number": 11,
      "question": "Feature a monomer needs for addition polymerisation?",
      "answer": "C=C double bond",
      "wrongOptions": [
        "Hydroxyl group",
        "Carboxyl group",
        "C–C single bond"
      ]
    },
    {
      "number": 12,
      "question": "Monomer used to make PVC?",
      "answer": "Chloroethene",
      "wrongOptions": [
        "Chloroethane",
        "Ethene",
        "Propene"
      ]
    },
    {
      "number": 13,
      "question": "Repeating unit of poly(propene)?",
      "answer": "–CH₂–CH(CH₃)–",
      "wrongOptions": [
        "–CH₂–CH₂–",
        "–CH₂–CH₂–CH₂–",
        "–CH(CH₃)–CH(CH₃)–"
      ]
    },
    {
      "number": 14,
      "question": "By-product of an addition polymerisation?",
      "answer": "None",
      "wrongOptions": [
        "Water",
        "Hydrogen chloride",
        "Ammonia"
      ]
    }
  ]
}