S2.4 From models to materials

S2.4 From models to materials Quiz

IB Chemistry HL: Quiz

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5 questions, one answer each

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  1. 1. Which compound lies closest to the ionic vertex? (Li 1.0, F 4.0, B 2.0, N 3.0, Al 1.6, Cl 3.2, C 2.6, S 2.6)

    • A. LiF
    • B. BN
    • C. AlCl₃
    • D. CS₂

  2. 2. (HL) Which pair of monomers could form a polyester?

    • A. Ethene and propene
    • B. A diamine and a dicarboxylic acid
    • C. A diol and a dicarboxylic acid
    • D. Two amino groups

  3. 3. (HL) What is released when benzene-1,4-diamine reacts with benzene-1,4-dicarbonyl dichloride?

    • A. H₂O
    • B. HCl
    • C. NH₃
    • D. Cl₂

  4. 4. What happens to the monomer in addition polymerisation?

    • A. A small molecule is lost
    • B. One bond of the C=C breaks
    • C. An ester link forms
    • D. Hydrogen bonds form between monomers

  5. 5. (HL) Which is the repeating unit of PLA, made from CH₃CH(OH)COOH?

    • A. –[CH₂–CH(CH₃)]–
    • B. –[O–CH(CH₃)–CO]–
    • C. –[CH(OH)–CO]–
    • D. –[O–CH₂–CH₂–O]–

Quiz