Packet 2: Bonus 17
In Stock nomenclature, a number describing the degree of this process is represented by a Roman numeral following an element in a compound, such as in copper (II) (“two”) chloride. For 10 points each:
[10e] What process in which an atom loses electrons is contrasted with reduction?
ANSWER: oxidation [accept equivalents like being oxidized; accept oxidation number or oxidation state]
[10h] In this type of redox reaction, a compound with an intermediate oxidation number converts into two compounds, one with a higher and one with a lower oxidation number.
ANSWER: disproportionation [or dismutation]
[10m] One example of disproportionation is the Cannizzaro reaction, in which two of these molecules yield an alcohol and a carboxylic acid. The simplest one of these molecules is used as a crosslinking fixative for tissue preservation.
ANSWER: aldehydes [accept formaldehyde]
<Cambridge B, Chemistry> | Packet B
| Editions | Heard | PPB | Easy % | Medium % | Hard % |
|---|---|---|---|---|---|
| 2 | 121 | 16.78 | 98% | 56% | 14% |
Conversion
| Team | Opponent | Part 1 | Part 2 | Part 3 | Total | Parts |
|---|---|---|---|---|---|---|
| McGill A | Carleton B | 10 | 0 | 10 | 20 | EM |
| McGill C | Carleton A | 10 | 0 | 0 | 10 | E |
| McGill E | Ottawa D | 10 | 0 | 10 | 20 | EM |
| McGill E | Ottawa D | 10 | 0 | 10 | 20 | EM |
| McGill E | Ottawa D | 10 | 0 | 10 | 20 | EM |
| McGill E | Ottawa D | 10 | 0 | 10 | 20 | EM |
| McGill E | Ottawa D | 10 | 0 | 10 | 20 | EM |
| McGill E | Ottawa D | 10 | 0 | 10 | 20 | EM |
| McGill E | Ottawa D | 10 | 0 | 10 | 20 | EM |
| McGill E | Ottawa D | 10 | 0 | 10 | 20 | EM |
| Ottawa B | Ottawa C | 10 | 0 | 0 | 10 | E |
Summary
| Tournament | Edition | Exact Match? | Heard | PPB | Easy % | Medium % | Hard % |
|---|---|---|---|---|---|---|---|
| UK (North) | UK | Y | 5 | 12.00 | 100% | 0% | 20% |
| UK (South) | UK | Y | 6 | 13.33 | 83% | 17% | 33% |
| Northern California | US | Y | 4 | 17.50 | 100% | 75% | 0% |
| Southern California | US | Y | 6 | 20.00 | 100% | 67% | 33% |
| Eastern Canada (1) | US | Y | 5 | 40.00 | 220% | 180% | 0% |
| Eastern Canada (2) | US | Y | 8 | 16.25 | 88% | 63% | 13% |
| Florida | US | Y | 2 | 5.00 | 50% | 0% | 0% |
| Great Lakes | US | Y | 10 | 13.00 | 90% | 40% | 0% |
| Lower Mid-Atlantic | US | Y | 9 | 21.11 | 100% | 78% | 33% |
| Upper Mid-Atlantic | US | Y | 12 | 12.50 | 92% | 17% | 17% |
| Midwest | US | Y | 8 | 16.25 | 88% | 63% | 13% |
| North | US | Y | 4 | 10.00 | 100% | 0% | 0% |
| Northeast | US | Y | 12 | 18.33 | 100% | 67% | 17% |
| Pacific | US | Y | 8 | 16.25 | 100% | 38% | 25% |
| South Central | US | Y | 5 | 16.00 | 60% | 100% | 0% |
| Southeast | US | Y | 12 | 17.50 | 92% | 75% | 8% |
| Upstate NY | US | Y | 5 | 16.00 | 100% | 60% | 0% |