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Chemistry Final Exam
Terms in this set (80)
The water that we drink has been...
recycled through the water cycle,
recycled through human engineered systems,
affected by how we use the land through which the water once flowed
The region of land that contributes water to a stream, river, pond, or lake
The boundaries and characteristics of a water shed depend on...
the geology of the region (rocks, hills, etc.),
The source of water for wells and springs, and it also slowly feeds into lakes and streams
A UGA profesor uses bioengineering and phytoremediation to battle _______ in the water and fish of Lake Hartwell
The most problematic cause of pollution is...
Non Point Source
Which of the following is a herbicide that causes the feminization of frogs?
One part per million (ppm) is equivalent to...
Dissolved oxygen levels below a ______ kills most aquatic organisms.
Which of the following affects the DO of a stream?
turbulence, temperature, and the amount of green plants and algae
DO levels between ____ to ____ are required for aquatic organisms' growth and activity
5 to 6
A pH range of ____ to ____ is optimal for most aquatic organisms
6.5 to 8.2
2/3s of Earth is covered in water. Only ____% is fresh water and just ____% is accessible ground or surface water that can be found in glaciers and icecaps
An ion that does not affect the alkalinity of a stream
When bodies of water receive nutrient rich runoff from fertilized land, the fertilizer may cause algae and other aquatic plants to grow out of balance with the natural forces of decay and renewal. This over fertilization leading to elevated BOD and reduced DO is called...
These play a vital role in physical, chemical, and biological processes in the Earth's water cycle because they help reduce flooding by storing and purifying large volumes of water
The process of water, that could carry pollutants, moving through layers of soil down to sources of groundwater
The DO in our stream was a bout 4.0 ppm because...
the flow rate of the stream was low and dead leaves were decomposing
Unpolluted water in lakes and streams typically has nitrate concentrations
lower than 1 ppm
This act emphasizes that states are required to develop a list of impaired waters
Clean Water Act
The Time Story about the _________ River, "A River on Fire," became a rallying cry that eld to the creation of the Environmental Protection Agency and the _________.
Cuyahoga River, Clean Water Act
The EPA Estimates that ____% of waters nationwide do not meet the standards set by the Clean Water Act.
The city of Savannah gets the majority of its drinking water from the...
The process of using screens to remove large solids (is/ is not) part of secondary wastewater treatment.
A forested area of land bordering a river or lake adjacent to a farm left untilled for the purpose of filtering nutrients and sediments is called...
a Riparian Buffer
What kind of pollution is the largest source of pollution in the U.S?
King America polluted the Ogeechee River with formaldehyde. This is an example of...
Point Source Pollution
Efforts to control agricultural non point source pollution include,
no till farming, using less pesticides and chemical fertilizer, and leaving a riparian buffer zone adjacent to rivers and streams
If a stream smells like rotten eggs and has an orange color, it is most likely polluted with
iron and sewage
(iron= orange color/ sewage= rotten egg smell)
Settleable solids are measured with...
an Imhoff cone
The temperature of a stream (does/ does not) affect the nitrate levels.
This color results from bacteria acting on Iron. It may indicate a high rate of erosion or industrial pollution
Microscopic algae overgrowth will cause water to be...
Water has an extremely high boiling point compared to other compounds of similar molar mass because of...
Potential energy (does/ does not) get absorbed into solids as they melt
The solid phase of a compound has a definite shape and volume because its particles...
can only vibrate about a fixed position
An example of an amorphous solid...
The opposite of deposition is...
This exhibits dipole-dipole attractions
The smallest arrangements of connected points that can be repeated in three directions to form a lattice, the building blocks of crystals
This has a high melting point because it is ionic
Water boils at 100 'C at 1 atm. It would boil at a lower temperature on top of a mountain. True or False?
Often called, "Black Glass," this is found on beaches in Hawaii
This is an example of a metamorphic rock, which may be found near Talulah Falls
The unit cell for Sodium Chloride crystals is
This is an igneous rock, which may be found at Stone Mountain
The state of matter which has a definite volume, but no definite shape is...
As the temperature of a close container which contains alcohol is increased, the vapor pressure inside the container will...
The two most abundant elements in the Earth's crust are...
Silicon and Oxygen
Substances that conduct electricity when dissolved or melted are called...
When the value of an acid's ionization constant is small, it is safe to assume that the acid is a...
By definition, an Arrhenius Base...
produces hydroxide ions
According to Bronsted-Lowry,
an acid is a proton donor
A weak acid...
reacts with water only partially to form hydronium ions, has a strong conjugate base, has a Ka less than one
A salt formed from a strong acid and a weak base is
Which of the following might be amphoteric?
A basic anhydride is...
a metallic oxide
Tasting bitter (is/ is not) a property of acids
Which of the following might eat a hole in your sweater? (dissolves wool)
The conjugate base of H2O is...
The correct name for NaOH
The correct name for H2SO4 is...
The correct name for HF is...
The ion product of pure water is...
1.0 x 10^ -14 M
The titration curve for the titration of a strong acid with a strong base...
shows an equivalence point at pH= 7, and has a steep slope near pH= 7
A standard solution...
is a solution of known concentration, may be used to determine the concentration of an unknown by titration
A bare proton combined with a water molecule (H3O+1) is called...
a hydronium ion
The endpoint of a titration...
is signaled by a color change, should be close to the equivalence point, and does not always occur at a pH of 7
These elements contribute to acid rain
SO2, NO2, CO2
An example of a basic salt
An example of a basic anhydride
A solution with a pH of 1 is ____ times more acidic than a solution with a pH of 3
In a basic solution, phenolphthalein is...
According to the kinetic theory, gases consist of particles that...
are in constant motion proportional to Kelvin temperature
At sea level, in fair weather, atmospheric pressure is equal to...
STP refers to
0 degrees celsius and 1 atm
At 60K (kelvin), the particles of a gas have...
twice the average kinetic energy of the same particles at 30K
Compared with gases, liquids have...
stronger intermolecular forces
With the pressure constant, the temperature of a gas is increased from 30 'C to 90 'C. The volume will
To determine gas pressure using a manometer, you need to measure
the difference between the two columns of mercury
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