Packet 1: Bonus 6
This element lends its name to a phenomenon in which a substance slowly re-emits absorbed photons at a longer wavelength. For 10 points each:
[10e] Name this element, one allotrope of which is used in match heads. This nonmetallic element is symbolized P.
ANSWER: phosphorus
[10m] This allotrope of phosphorus must be stored under water due to its reactivity. Modern militaries use this allotrope to create smoke screens, and it is also used in incendiary weapons whose use on civilians is banned by the Geneva Convention.
ANSWER: white phosphorus [or tetrahedral phosphorus]
[10h] Phosphorene, a form of black phosphorus with this geometric property, might be used in transistors because it has a tunable band gap, similarly to graphene, another material with this property of being made of a single layer of atoms.
ANSWER: two-dimensional [or 2-D; prompt on flat or planar]
<Chemistry — June Yin> | SHOW-ME Four Packet 1
| Heard | PPB | E % | M % | H % |
|---|---|---|---|---|
| 26 | 18.85 | 100% | 77% | 12% |
Conversion
| Team | Opponent | Part 1 | Part 2 | Part 3 | Total | Parts |
|---|---|---|---|---|---|---|
| Franklin Road Academy | Owensboro | 10 | 10 | 0 | 20 | EM |
| Merrol Hyde A | Athens Bible School | 10 | 10 | 0 | 20 | EM |
| USN A | Merrol Hyde B | 10 | 10 | 0 | 20 | EM |
| USN B | Portland High | 10 | 10 | 10 | 30 | EMH |
| USN C | Harpeth Hall | 10 | 10 | 0 | 20 | EM |
Summary
| Tournament | Edition | Match | Heard | PPB | E % | M % | H % |
|---|---|---|---|---|---|---|---|
| Rube Goldberg XIX | 11/20/2025 | ✓ | 16 | 16.25 | 100% | 63% | 0% |
| SHOW-ME Four Nationwide HS | 11/20/2025 | ✓ | 5 | 24.00 | 100% | 100% | 40% |
| SPOOKY IX | 11/20/2025 | ✓ | 5 | 22.00 | 100% | 100% | 20% |