Group VII Properties

Group VII Properties Quiz

Spec 8.3 · Cambridge IGCSE Chemistry: Quiz

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  1. 1. Which statement correctly describes the physical state and appearance of Group VII halogens at room temperature and pressure?

    • A. Chlorine is a pale yellow-green gas, bromine is a red-brown liquid, and iodine is a grey-black solid
    • B. Chlorine is a yellow liquid, bromine is a red gas, and iodine is a grey-black liquid
    • C. Chlorine is a pale yellow-green liquid, bromine is a red-brown solid, and iodine is a grey-black gas
    • D. Chlorine is a colourless gas, bromine is a red-brown solid, and iodine is a grey-black liquid

  2. 2. What is the molecular formula of a halogen element in Group VII?

    • A. X (where X represents a single halogen atom)
    • B. X₂ (where X represents a halogen atom)
    • C. X₃ (where X represents a halogen atom)
    • D. X₄ (where X represents a halogen atom)

  3. 3. Which trend down Group VII is correctly paired with its explanation?

    • A. Increasing reactivity because atomic radius increases and electrons are further from the nucleus
    • B. Decreasing reactivity because atomic radius increases and electrons are further from the nucleus, making it harder to gain an electron
    • C. Increasing density because fewer electrons are present in each element
    • D. Decreasing density because the elements change from gas to liquid to solid

  4. 4. Chlorine displaces bromine from potassium bromide solution, producing a brown colour. Which statement best explains why this displacement occurs?

    • A. Bromine is more dense than chlorine
    • B. Chlorine is more reactive than bromine because it is higher in Group VII
    • C. Potassium is a stronger oxidising agent than chlorine
    • D. Bromine atoms are larger than chlorine atoms

  5. 5. Fluorine is positioned above chlorine in Group VII. Using trends in the periodic table, predict which statements about fluorine are correct: (1) Fluorine is more reactive than chlorine; (2) Fluorine is a solid at r.t.p.; (3) Fluorine has a lower density than chlorine; (4) Fluorine would displace chlorine from chloride solutions.

    • A. Only statement (1) is correct
    • B. Statements (1) and (4) are correct
    • C. Statements (1), (2), and (4) are correct
    • D. All four statements are correct

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