Question
In para·hydrophobicity, rose petals and peach skins exhibit this effect for water even though they’re hydrophobic. For 10 points each:
[10e] Name this process by which a surface clings to a liquid. Capillary action combines it with cohesion.
ANSWER: adhesion [or adhering; or adhere or adhesive]
[10m] Surface-patterned “forests” of these nonpolar molecules are also para·hydrophobic. These strong conductive allotropes of carbon are classified as having one or more walls.
ANSWER: carbon nanotubes [or CNTs; prompt on fullerenes; prompt on tubes; reject “buckminsterfullerene”]
[10h] Water droplets cling to hydrophobic polymers synthesized in this configuration. In this type of polymer, named for the household object it resembles, short chains are densely grafted onto a different longer backbone or surface.
ANSWER: brush polymer [or polymer brush; or bottlebrush polymer]
<Adam Silverman, Science - Chemistry> ~23724~ <Editor: Adam Silverman>
Data
Summary
| Tournament | Edition | Exact Match? | Heard | PPB | Easy % | Medium % | Hard % |
|---|---|---|---|---|---|---|---|
| 2024 PACE NSC | 06/08/2024 | Y | 36 | 13.06 | 81% | 47% | 3% |