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Environmental Quality Chemistry
Exam 1
32
Chemistry
Undergraduate 3
03/02/2011

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Term
Composition of Earth's Atmosphere
Definition
78.01 Nitrogen 20.95 Oxygen .93 Argon Other .01 CO2 .038
Term
Only atmospheric gas that is reactive
Definition
02
Term
Rxns in atmosphere
Definition
Are net exothermic (give off heat)
Term
Thermosphere
Definition
Ionization occurs here
Term
Dissociation
Definition
Mesosphere
Term
Troposphere
Definition
Lots of reactions because of mixing of wind
Term
Regions of Ultraviolet Spectrum
Definition
UV-C 200-280 UV-B 280-320 UV-A 320-400
Term
Fahrenheit to celsius
Definition
Subtract by 32 and divide by 1.8
Term
Principal components of smog
Definition
Particulates (fly ash, silicates, C soot) SO2 H2SO4 (aerosol) CO NOx VOCs O3, aldehydes, PAN
Term
Components of industrial smog
Definition
Particulates (fly ash, silicates, C soot) SO2 H2SO4 CO NOx
Term
Different types of Scrubbers
Definition
Electrostatic, Bag Filtration, Cyclone Separator, Wet Scrubber, Limestone Slurry (gets rid of SO2)
Term
Temperature Inversion
Definition
Layer of warm air traps smog, making it worse
Term
Environental Chemistry
Definition
Chemical aspects of problems that human beings have created in the natural environment
Term
Chemicals
Definition
Substances produced synthetically by the actions of chemistry
Term
Human Culture Sphere
Definition
Population, Technology, Economics, Politics
Term
Earth's Life-Support System
Definition
Air, Water, Lithosphere, Biosphere
Term
Components of Photochemical Smog
Definition
NOx, CO, VOCs, O3, aldehydes, PAN
Term
3 different types of functional groups
Definition
aldehyde, peroxy, keytone
Term
PAN
Definition
Peroxy Acyl Nitrates
Term
What makes the red brown color of smog
Definition
The absorption of NO2, the only component that absorbs in the visible portion of the spectrum
Term
Transmittance
Definition
The fraction of incident radiation that passes through the sample. T = P/P0 T ranges from 0-1
Term
Absorbance (A)
Definition
related to the transmittance by A = log (1/T)
Term
Particulates
Definition
Tiny solid or liquid particles suspended in air
Term
Ultraviolet
Definition
Dissossiates Molecules
Term
Infrared
Definition
Molecule vibrates
Term
Microwave
Definition
Molecule rotates
Term
Symmetric Stretching
Definition
Both molecules stretch out from center
Term
Assymetric Stretching
Definition
One molecule stretches out the other stretches in
Term
In plane rocking
Definition
Both go clockwise
Term
In plane Scissoring
Definition
Bend towards each other inwards
Term
Out of plane wagging
Definition
Both positive middle Negative
Term
Out of plane twisting
Definition
One moves forward the other moves backwards
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