Test 1 Flashcards
Which substance is not considered to be an air pollutant
N2
Of 5 major gaseous components of air, which is the only 1 to vary significantly in concentration from place to place from day to day
Water vapor
The 2 main products if the combustion gasoline in an automobile engine are
Water and carbon dioxide
What Pollutant is present in air as particulate matter?
Spot
Which color as used in the air quality index, warns that the level if a pollutant is hazardous the most dangerous level?
Maroon
Substance is an element (NO2/NaCl/ N2
N2
Ozone is considered an air pollutant in the —- but is a valuable protective layer in the —–
Troposphere , stratosphere
A —- is a fixed number of atoms held together by chemical bonds in a certain spatial arrangement
Molecule?
Chemical symbol for salt
Ag
Except in the case of hydrocarbons when naming virtually all compounds made up of 2 elements the 2nd element mentioned
Ends in IDE
Which pollutant are you more likely to encounter in dangerous concentrations indoor rather than outdoors?
Carbon monoxide
Pollutants can be detected by their odors
O3 SOx NOx
Chemical can not be detected by their odors
Co
Catalytic converters reduce the amount of —in car exhaust
Co
Are examples of technological advances that have reduced air pollution?
Paint with reduced voc, burning gasoline in leaf blowers
When assessing the risk of air pollutant which does not play a role on considering someone’s exposure to the pollutant
The toxicity of the pollutant
Not a mixture
Sodium chloride
Distinguishes the atoms of 1 element from another
of protons
Which region of ultraviolet spectrum absorbed least by atmosphere
Uv-A
Ozone layer is found
Stratosphere
Light behaves like
Both particle and a wave
In the periodic table which elements typically have similar properties
Those in the same column
Isotopes of an element have the same # of —- but different # of
Protons, neutrons
Free radicals are
Highly reactive chemical species, species with unpaired electrons, spieces such as H & OH
WUKF FM transmits at 93.5 MHZ what is the wavelength of the electromagnetic radiation that carries the stations signal
3.21m
Results of Montreal protocol
Greatly reduced production of CFC, increased production of alternatives to CFCs, recycling of CFC
Montreal protocol is a
Treaty to reduce the amount of CFCs produced in the world
What is special about the s. Pole vs the N. Pole that leads to ozone depletion at the s. Pole
Polar stratosphere clouds from almost exclusively at the s pole
Stratospheric ozone is destroyed and formed at the same rate
Above the equator and above the Antarctic in it’s early form
The o2 molecules break apart @ lower wavelength that the o3 molecule. What is the main reason?
The average bond in o2 is shorter and stronger than the o3
Part if the chapman cycle in the stratosphere
Ozone is removed by an interaction with uv radiation, ozone reacts with oxygen atoms to form oxygen molecules
In earths atmosphere where is the ozone layer
Stratosphere
Uv b radiation has a frequency of approximately 17 s -1 what is the energy if a photon of this light
6.73x 10-17
Relationship between stratosphere levels of atomic chlorine and ozone
As chlorine increases ozone decreases
Nucleus of an atom contain
Protons and neutrons only
Chapman cycle, ozone formation depends upon a sufficient concentration of oxygen atoms. Which step in the chapman cycle produces oxygen atoms?
Absorption of light ( <= 242 nm) by oxygen molecules
Elements in the same column of the periodic table in the groups labeled a a tend to have similar chemical & physical properties
Outer valence electrons
Mass #of an isotope of an element is the
Sum of the # of it’s protons and neutrons
Chlorofluorocarbon rises to the stratosphere
Interacts with uv energy to produce free radicals that destroy ozone
Increasing wavelength of light gases in this
Ultralight>viable> infared
Atomic number is the
Number of protons in a nucleus
In reference to waves frequency is the
Number of waves passing a fixed point in 1 sec
The goal of Montreal protocol in 1987 was to
Reduce the amount of new production of Chlorofluorocarbon in developed countries, recycle existing Chlorofluorocarbon rather than release them into the air, encourage research into substitutes for Chlorofluorocarbon
Speed of light air
Is independent of the wavelength and frequency of light
Decreased stratosphere ozone concentration may led to
Increased incidences of melanoma, harm to young marine life, an increased occur acne of cataracts
What is the role of polar stratosphere clouds (PSCs) on the destruction of ozone?
Chemical reactions occur on the clouds that convert molecules that do no damage to those that deplet ozone
