2019 - Q13
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A sample of polydifluoroethylene is determined to have an average molar mass of 4.8 × 10^4 g mol−1.
Approximately how many carbon atoms are there in an average molecule?
A. 750
B. 1500
C. 2500
D. 4000
2020 - Q12
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The structure of part of a polymer chain is shown.
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Which statement best explains why plastics made from this polymer require a temperature of approximately 250°C before they begin to soften?
A. The carbon–carbon bonds in the polymer chains are strong.
B. The carbon–hydrogen bonds in the polymer chains are strong.
C. Extensive dipole–dipole and dispersion forces exist between the polymer chains.
D. Extensive hydrogen bonds and dispersion forces exist between the polymer chains.
2021 - Q10
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The structure of part of a polymer chain is shown.
2022 - Q1
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What term is used to define the repeating unit of a polymer?
A. Dimer
B. Isomer
C. Monomer
D. Primer
2022 - Q18
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