infrared - 2025 ACF Fall - Buzzpoints App

Question

Forensic chemists may use the “Fourier transform” variety of a technique named for this regime to identify drugs. For 10 points each:

[10m] Name this regime of the electromagnetic spectrum. A hydroxyl group exhibits a broad peak around 3300 inverse centimeters in a form of spectroscopy named for this regime of wavelengths.

ANSWER: infrared [or IR; accept Fourier transform infrared spectroscopy or FTIR spectroscopy; accept near-infrared or near-IR; accept mid-infrared or mid-IR; accept far-infrared or far-IR]

[10e] Another technique used by forensic chemists is mass spectrometry, which analyzes compounds by their ratio of mass to this quantity. Ionizing an atom gives it a non-zero value for this quantity, which is measured in coulombs.

ANSWER: electric charge [accept mass-to-charge ratio]

[10h] A gold standard in forensic analysis is the combination of mass spectrometry with this other technique. This technique incorporates a flame ionization detector and a purge-and-trap system to remove volatile chemicals.

ANSWER: gas chromatography [or GC; or vapor-phase chromatography or VPC; or gas-liquid partition chromatography or GLPC; accept gas chromatography-mass spectrometry or GC-MS; prompt on chromatography]

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Summary


Northern California	Main	Y	4	20.00	100%	75%	25%
Southern California	Main	Y	7	17.14	100%	71%	0%
Eastern Canada (1)	Main	Y	5	20.00	80%	80%	40%
Florida	Main	Y	4	10.00	100%	0%	0%
Great Lakes	Main	Y	10	21.00	90%	80%	40%
Lower Mid-Atlantic	Main	Y	9	21.11	89%	89%	33%
Upper Mid-Atlantic	Main	Y	9	18.89	100%	89%	0%
North	Main	Y	4	17.50	100%	25%	50%
Northeast	Main	Y	12	19.17	92%	75%	25%
Pacific	Main	Y	8	20.00	100%	75%	25%
South Central	Main	Y	6	16.67	83%	67%	17%
Southeast	Main	Y	12	16.67	100%	58%	8%
UK (North)	UK	Y	5	24.00	100%	80%	60%
Upstate NY	Main	Y	5	16.00	100%	40%	20%

Data


Stanford B	Stanford A	10	10	0	20
Berkeley Boss Bandit	Berkeley Little Prince	10	10	0	20
Berkeley Mighty Miner	Berkeley Skeleton King	0	10	0	10
Berkeley Archer Queen	UCSC	10	10	10	30
UCLA D	USC A	10	10	0	20
UCSD B	Claremont B	10	10	0	20
UC Irvine	UCSD A	10	10	0	20
UC Santa Barbara	Claremont C	0	10	0	10
UCLA C	UCLA A	10	10	0	20
Claremont A	UCLA E	10	10	0	20
USC B	UCLA F	0	10	0	10
Carleton A	Carleton B	10	10	0	20
McGill A	Ottawa D	10	10	10	30
McGill C	Ottawa A	10	10	10	30
Ottawa B	McGill B	10	0	0	10
Ottawa C	McGill E	0	10	0	10
UCF A	Florida A	0	10	0	10
Florida B	South Florida A	0	10	0	10
Florida Tech A	Florida State A	0	10	0	10
Florida Tech B	ERAU Daytona A	0	10	0	10
Michigan State C	CWRU B	0	0	0	0
Ohio State B	CWRU C	10	10	0	20
Louisville A	Kentucky	10	10	0	20
Louisville D	Ohio State A	10	10	0	20
Michigan A	Louisville C	10	10	10	30
Michigan B	Michigan State B	10	10	10	30
Pittsburgh	Michigan C	10	10	0	20
Michigan D	CWRU D	10	10	0	20
CWRU A	Michigan State A	10	10	10	30
WVU A	Ohio State C	0	10	10	20
JMU B	Virginia Tech A	10	0	0	10
UNC A	JMU A	10	10	0	20
UNC D	Liberty B	10	10	10	30
Liberty C	NCSU A	10	10	10	30
UNC B	William & Mary A	0	10	0	10
Virginia Tech B	UNC C	10	10	10	30
VCU A	NCSU B	10	10	0	20
Virginia Tech C	William & Mary B	10	10	0	20
Liberty A	William & Mary C	10	10	0	20
NYU B	George Mason C	10	10	0	20
Johns Hopkins	Lehigh A	10	10	0	20
Maryland B	Vassar A	10	10	0	20
NYU A	Princeton	10	10	0	20
Penn	Lehigh B	10	10	0	20
Columbia A	Rowan	10	10	0	20
Rutgers D	Columbia B	10	10	0	20
Rutgers C	Stony Brook	0	10	0	10
Vassar B	NYU C	10	10	0	20
Iowa State	Wisconsin A	10	10	10	30
Wisconsin C	Macalester	0	10	0	10
St. Thomas	Minnesota	0	10	10	20
Michigan Tech	Wisconsin B	0	10	0	10
Tufts A	Brandeis Beethoven	0	10	0	10
Brandeis Mozart	Amherst B	0	10	0	10
Brandeis Bach	Boston University A	10	10	0	20
Vermont A	Dartmouth C	10	10	10	30
Harvard	Southern Connecticut State University A	0	10	0	10
Amherst A	MIT B	10	10	0	20
Tufts C	Williams C	10	10	0	20
Williams A	Tufts B	10	10	0	20
MIT A	UConn A	10	10	10	30
Brown B	Vermont B	10	0	0	10
Williams B	Boston College B	10	10	0	20
Brown A	Dartmouth B	10	10	10	30
Alberta B	Arizona State A	10	10	0	20
British Columbia A	Arizona State B	10	10	10	30
British Columbia B	Washington Chinook	0	10	0	10
Washington Chum	Washington Sockeye	10	10	10	30
Washington Atlantic	Washington Coho	0	10	0	10
Washington State	Washington Masu	10	10	0	20
Washington Pink	Boise State	10	10	0	20
Washington Steelhead	Texas	10	10	0	20
Central Oklahoma B	Kansas State B	0	0	0	0
Tulsa B	Kansas State A	10	10	0	20
Murray State College B	Oklahoma	10	10	0	20
Nebraska A	Nebraska C	10	10	10	30
Nebraska B	Harding	0	10	0	10
Murray State College A	Rose State	10	10	0	20
Auburn C	Tennessee B	10	10	0	20
Alabama A	Auburn A	0	10	0	10
Chipola College	Auburn B	10	10	0	20
Georgia Tech A	Georgia A	10	10	0	20
Vanderbilt B	Georgia Tech C	10	10	0	20
Vanderbilt C	Georgia Tech D	0	10	0	10
Clemson C	Georgia Tech E	0	10	0	10
Georgia Tech F	Montevallo	0	10	0	10
Clemson A	South Carolina A	10	10	0	20
Tennessee A	Sewanne	0	10	0	10
Tennessee Tech	Vanderbilt A	10	10	10	30
Clemson B	Emory A	10	10	0	20
Edinburgh C	Durham B	10	10	10	30
York	Durham C	0	10	0	10
Sheffield B	Durham D	10	10	10	30
Durham A	Edinburgh D	10	10	0	20
Sheffield A	Edinburgh B	10	10	10	30
Binghamton A	Rochester	0	10	0	10
RIT A	Binghamton B	10	10	0	20
Cornell A	Binghamton C	0	10	10	20
Cornell B	RIT B	10	10	0	20
Cornell D	Cornell C	0	10	0	10