Bonus
The movement of compounds with this property from groundwater into buildings is the most common form of vapor intrusion. For 10 points each:
[10e] Name this property of compounds that readily vaporize. This property names a class of hazardous “organic compounds” found in paints and perfumes.
ANSWER: volatility [or volatile; accept volatile organic compounds]
[10h] This naturally produced compound comprises the majority of VOCs emitted by plants. In biological systems, DMAPP is a precursor to derivatives of this compound.
ANSWER: isoprene [accept terpenes; accept isoprenoids or terpenoids]
[10m] Ozonolysis of VOCs can form this carcinogen, “releasers” of which have been controversial in the cosmetics industry. This chemically-simple preservative cross-links DNA and proteins in a classic example of chemical fixation.
ANSWER: formaldehyde [or methanal]
<MY, Chemistry>
| Editions | Heard | PPB | Easy % | Medium % | Hard % |
|---|---|---|---|---|---|
| 1 | 38 | 13.42 | 84% | 40% | 11% |
Conversion
| Team | Opponent | Part 1 | Part 2 | Part 3 | Total | Parts |
|---|---|---|---|---|---|---|
| Cambridge A | LSE | 10 | 0 | 10 | 20 | EM |
| Cambridge B | Manchester | 10 | 0 | 10 | 20 | EM |
| Cambridge C | Sheffield | 10 | 0 | 10 | 20 | EM |
| Cambridge D | Warwick A | 10 | 0 | 0 | 10 | E |
| Cambridge E | Warwick B | 10 | 0 | 10 | 20 | EM |
| Imperial B | NYU C | 10 | 0 | 0 | 10 | E |
| Oxford A | Imperial A | 10 | 10 | 0 | 20 | EH |
| Southampton A | Oxford B | 10 | 0 | 0 | 10 | E |
| Southampton B | Bristol | 10 | 0 | 0 | 10 | E |
Summary
| Tournament | Edition | Heard | PPB | Easy % | Medium % | Hard % |
|---|---|---|---|---|---|---|
| Lower Mid-Atlantic | 2025-02-01 | 6 | 10.00 | 67% | 17% | 17% |
| Midwest | 2025-02-01 | 6 | 15.00 | 83% | 67% | 0% |
| Northeast | 2025-02-01 | 4 | 12.50 | 75% | 25% | 25% |
| Overflow | 2025-02-01 | 4 | 10.00 | 75% | 25% | 0% |
| Pacific Northwest | 2025-02-01 | 2 | 15.00 | 100% | 50% | 0% |
| UK | 2025-02-01 | 9 | 15.56 | 100% | 44% | 11% |
| Upper Mid-Atlantic | 2025-02-01 | 7 | 14.29 | 86% | 43% | 14% |