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Environmental Chemistry
Final Exam Practice
152
Other
Undergraduate 2
12/18/2007

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Cards

Term

In the auto exhaust lab, if the oxygen level was too high and the carbon dioxide level was too low

Definition

there was too much air in the sample bag

Term

most important threat to drinking water (U.S. Department of Public Health)

Definition
oxygen demanding water
Term
persistent
Definition
  • non bio-degradable
  • long lasting
  • remains in environment for a long time
Term
NVOC
Definition
non-volatile organic compound
Term
fertilizers are composed of these 3 things
Definition
  1. phosphate
  2. potassium
  3. nitrate
Term

Phosphate, potassium, and nitrate are found in

Definition
fertilizers
Term
How would you expect to find the water as a result of the explosion and spill in Everett?
Definition
hexane
Term
What is toxic?
Definition
Chlorine
Term

Instrument used for sodium

Definition
Atomic absorption spectrophotometer (flame)
Term
Instrument used for lead
Definition
atomic absorption spectrophotometer (furnace)
Term
Atomic absorption spectrophotometer is used for what elements and with what medium?
Definition
  1. Lead - atomic absorption spectrophotometer (furnace)
  2. Sodium - atomic absorption spectrophotometer (flame)
Term
Visibility spectrophotometer is used for what element?
Definition
Phosphate
Term
What instrument is used for phosphate?
Definition
Visible spectrophotometer
Term
What is toxic?
Definition
Chlorine
Term
What does MCL stand for?
Definition
Maximum Contaminant Level
Term
What instrument is used to measure acidity?
Definition
The computer and pH meter measures acidity.
Term
What instrument is used to measure chloride?
Definition
There is no instrument used, but we couned drops of silver nitrate and watched for when it turned pale orange.
Term
What instrument is used to measure bacteria?
Definition
Agar on pesticides was used to measure bacteria.
Term
What is measured by the visible spectrophotometer?
Definition
Phosphate
Term
What is measured by the agar on petridishes?
Definition
Bacteria
Term
What measures the acidity?
Definition
The computer or a pH meter measures the acidity.
Term
What instrument measures bacteria?
Definition
Agar on petridishes
Term
What is the element that is measured by counting drops of silver nitrate and that turns pale orange?
Definition
Chloride
Term
What is the instrument that is used to measure phosphate?
Definition

A visible spectrophotometer measures phosphate.

Term
What does agar on petridishes measure?
Definition
Bacteria
Term
What instrument measures phosphate?
Definition
A computer or pH meter measures phosphate.
Term
What is the most important threat to drinking water quality according to the U.S. Department of Health?
Definition

oxygen DEMANDING waster

Term
What toxic material can be formed in your house heating system, through incomplete combustion, and also is in auto exhaust?
Definition
Carbon monoxide is a toxic material that can be formed in your house heating system, through incomplete combustion, and also in auto exhaust.
Term
NVOC
Definition

non volatile organic compound

Term
VOC
Definition
volatile organic compound
Term
What is one element/material that is toxic?
Definition
Chlorine
Term
What measures chloride?
Definition
Chloride is measured by counting drops of silver nitrate and it turning orange.
Term
What measures agar on petridishes?
Definition
Bacteria
Term
What measures acidity?
Definition
Acidity is measured by a pH meter and the computer.
Term
What is phosphate measured by?
Definition
Visible spectrophotometer
Term
What measures sodium?
Definition

An atomic absorption spectrophotometer (flame) measures sodium.

Term
What does an atomic absorption spectrophotometer (flame) measure?
Definition
Sodium
Term

What do the initials MCL represent?

Definition
Maximum Contaminant Level
Term
What does the atomic absorption spectrophotometer measure when it uses a flame?
Definition

The atomic absorption spectrophotometer measures sodium when it uses a flame.

Term
What does the visibility spectrophotometer measure?
Definition
The visibility spectrophotometer measures phosphate.
Term
What element/material is toxic?
Definition
Chlorine is toxic.
Term
What is sodium measured by?
Definition
Sodium is measured by an atomic absorption spectrophotometer with a flame.
Term
What is phosphate measured by?
Definition
Phosphate is measured by a visibility spectrophotometer.
Term
What is lead measured by?
Definition
Lead is measured by an atomic absorption spectrophotometer (furnace).
Term
What measures % alcohol and % brix?
Definition
A refractometer measures % alcohol and % brix.
Term
What element is measured by a visibility spectrophotometer?
Definition
Phosphate is measured by a visibility spectrophotometer.
Term
What element is measured by the atomic absorption spectrophotometer (furnace)?
Definition
Lead is measured by the atomic absorption spectrophotometer (furnace).
Term
What element is measured by the atomic absorption spectrophotometer (flame)?
Definition

Sodium is measured by the atomic absorption spectrophotometer (flame).

Term
What are the qualities of apple cider that prevent it from fermenting?
Definition

Apple cider has been:

  • pasteurized
  • flash heated

 

Term
What does TEL mean?
Definition
TEL means tetraethyl lead.
Term
What are two other names for glucose?
Definition

Glucose is also called:

  • dextrose.
  • blood sugar.
Term
What is the name of an -OH functional group in a molecule?
Definition
The name of an -OH functional group in a molecule is an alcohol.
Term
When the name of a compound contains the prefix phenyl-, what molecule must be a part of the structure?
Definition
When the name of a compound contains the prefix phenyl-, the benzene molecule must be a part of the structure.
Term
What instrument in the lab was used to measure the sugar content in the fermentation lab?
Definition
The refractometer was the instrument in the lab that was used to measure the sugar content in the fermentation lab.
Term

How many pounds is in 1 kilogram?

Definition
2.2 pounds = 1 kilogram
Term
How many kilograms is in 2.2 pounds?
Definition
1 kilogram = 2.2 pounds
Term
What instrument was used to measure the sugar content in the fermentation lab?
Definition
The refractometer was used to measure the sugar content and alcohol content in the fermentation lab.
Term
What functional group represents carboxylic acid?
Definition
Carboxylic acid represents -COOH.
Term

How do you find the proof?

Definition
The proof is double the percentage, s a 60% alcohol is 120 proof.
Term
What is glucose?
Definition
C6H12O6
Term

How do you convert a Celcius number to Farenheit?

Definition
F = (9/5)C + 32
Term
What happens to apple cider purchased from a store?
Definition
Apple cider purchased from a store is pasturized or flash heated to kill bacteria.
Term
What is yeast?
Definition
Yeast is a small organism fungi that converts sugars to alcohol and oxygen.
Term
How does yeast reproduce?
Definition
Yeast reproduces through asexual reproduction.
Term

How do you convert a gram to a mole?

Definition

grams/moles = molecular mass/one mole

Term
What is the exothermic reaction?
Definition
Exothermic heat of reaction is the neutralization reaction.
Term
What is MRE?
Definition
MRE equals meals ready to eat.
Term
What metal clings to the stirring bar?
Definition
Iron clingsto the stirring bar.
Term
What is the endothermic reaction?
Definition

An endothermic reaction is the heat of reaction.

Term
What are the parts of the heat of reaction?
Definition

The parts of the heat of reaction include:

  • dehydration
  • rearrangement
Term
What does hydrogen bonding include?
Definition
Hydrogen bonding includes ethanol and water and form hydrogen bonding.
Term
What is money soaked in?
Definition
Money is soaked in rubbing alcohol.
Term
Is acetone an ionic or covalent molecule?
Definition
Acetone is a covalent molecule because it does not contain a metal.
Term
What is the name of the functional group in acetone?
Definition
The name of the functional group in acetone is keytone.
Term
What happens when sucrose is mixed with sulfuric acid?
Definition
When sucrose is mixed with sulfuric acid, it is an exothermic reaction.
Term
When isopropyl is mixed with water, what happens to a dollar bill?
Definition
A dollar bill burns when it it is soaked in isopropyl mixed with water.
Term
What are keytones and aldehydes?
Definition
Keytones and aldehydes determine the taste of alcohol.
Term

How do you change Celcius to Farenheit?

Definition

Farenheit = (9/5)Celcius + 32

Term
What is (9/5) Celcius + 32?
Definition
Farenheit
Term
What is C6H12O6?
Definition

C6H12O6 is glucose.

Term
What is C12H22O11?
Definition
C12H22O11 is sucrose.
Term
What is the formula for sucrose?
Definition
The formula for sucrose is C12H22O11.
Term
What is done to prevent oxygen from entering into the system?
Definition
To prevent oxygen from entering into the system, a professional vaporlock prevents oxygen from coming in but allows carbon dioxide to escape.
Term
Why is it unlikely that apple cider purchased at the store would ferment?
Definition
Apple cider purchased at the store has been pasteurized and flash heated.
Term
How long does it take baker's yeast to reproduce?
Definition
It takes 20 minutes for baker's yeast to reproduce.
Term
What is C6H12O6?
Definition
C6H12O6 is GLUCOSE.
Term
What is C12H22O6?
Definition
C12H22O611 is SUCROSE.
Term

How does yeast reproduce?

Definition
Yeast reproduces with asexual fission.
Term
How does it take baker's yeast to reproduce?
Definition
It takes 20 minutes for yeast to reproduce.
Term
What is iso-sweet?
Definition
Iso-sweet is high fructose corn syrup.
Term
What is the advantage of iso-sweet?
Definition
The advantage of iso-sweet is that it is sweeter and cheapter than sugar.
Term
What is the disadvantage of iso-sweet?
Definition
The disadvantage of iso-sweet is that it has a slightly different taste, overused, and has empty calories.
Term
What is an advantage of a juice?
Definition
An advantage of a juice is its vitamins and minerals.
Term
What is a disadvantage of a juice?
Definition
A disadvantage of a juice is other carbohydrates that won't form ethanol.
Term
Why is gasoline blended?
Definition
Gasoline is blended because Season, Engine, and Climate.
Term

What are the reasons that the gasoline is blended?

Definition
The gasoline is blended for the season, engine, and climate.
Term
What could be added to gasoline to increase the octane rating?
Definition
Methane, xylene, ethanol, toulene, and benzene could be added to gasoline to increase the octane rating.
Term

What will increase the octane rating?

Definition
  • Methane
  • Xylene (magic markers)
  • Ethanol
  • Toulene
  • Benzene
Term
What do the letters TEL represent?
Definition
TEL represents tetraethyl lead.
Term
What are the other two names for glucose?
Definition

The other two names for glucose are:

  1. Dextrose
  2. Blood sugar
Term
What is needed for fermentation to occur?
Definition
Yeast is needed.
Term
What can be added to gasoline to increase the octane rating?
Definition

To be add to the octane rating:

  • Methane
  • Xylene (magic markers)
  • Ethanol
  • Toulene
  • Benzene
Term
What does DDT stand for?
Definition
DDT stands for dichlorodiphenyltrichloroethane.
Term
What is an exothermic rate of reaction?
Definition
An exothermic rate of reaction is a neutralization reaction.
Term
What is an endothermic heat reaction?
Definition
An endothermic heat reaction is a dehydration and rearrangement.
Term

What is a neutralization reaction?

Definition
A neutralization reaction is an exothermic reaction.
Term
What is a neutralization reaction?
Definition

An exothermic heat of reaction is a neutralization reaction because it is acid + base --> salt + water + heat

Term
What is the name of the reaction of acid + base --> salt + water + heat?
Definition
The name of the heat of reaction of acid + base --> salt + water + heat is EXOTHERMIC reaction.
Term
What is an endothermic heat of reaction?
Definition

An endothermic heat of reaction includes:

  • Dehydration
  • Rearrangment

 

Term
What are the pieces of endothermic reaction?
Definition

The pieces of ENDOTHERMIC reaction are:

  • Dehyration
  • Rearrangement
Term
What is EXOTHERMIC?
Definition
EXOTHERMIC is a neutralization reaction.  A neutralization reaction involves acid + base --> salt + water + heat.
Term
What is the TEL?
Definition
The TEL is a tetraethyl lead.
Term
What metal clings to the stirring bar?
Definition
The metal that clings to the stirring bar is iron.
Term
What is the ENDOTHERMIC reaction?
Definition

The ENDOTHERMIC reaction is a heat of reaction that includes:

  • Dehydration
  • Rearrangement

 

Term

What is the heat of reaction for a neutralization reaction?

Definition
The heat of reaction for a neutralization reaction is acid + base --> salt + water + heat.
Term
What is the endothermic rate of reaction?
Definition

The endothermic rate of reaction is a heat of reaction including:

  • Dehydration
  • Rearrangement
Term

What is the neutralization reaction?

Definition
The neutralization reaction is an exothermic reaction.
Term
What is an endothermic reaction?
Definition
An endothermic reaction is a heat of reaction of dehydration and rearrangement.
Term
What was the MRE?
Definition
The MRE is meals ready to eat.
Term
What is the acid + base --> salt + water + heat reaction?
Definition
The acid + base --> salt + water + heat reaction is the exothermic reaction.
Term
What is the endothermic heat of reaction?
Definition

The endothermic heat of reaction involves:

  • Dehydration
  • Rearrangement
Term

What is dehydration and rearrangement for the heat of reaction?

Definition
The dehydration and rearrangement is the heat of reaction for endothermic.
Term
What is the rearrangement and dehydration?
Definition
The rearrangement and dehydration of heat of reaction is an endothermic reaction.
Term
What is involved with an endothermic reaction?
Definition
In an endothermic reaction, the dehydration and rearrangement happens.
Term
What is the dehydration and rearrangement of a heat of reaction?
Definition
The dehydration and rearrangement of a heat of reaction is the endothermic reaction.
Term
What is an exothermic reaction?
Definition
An exothermic reaction is acid + base --> salt + water + heat.
Term
What is acid + base --> salt + water + heat?
Definition
An acid + base --> salt + water + heat is an endothermic reaction.
Term
What is the exothermic reaction?
Definition
The exothermic reaction is a neutralization reaction.
Term

What does the endothermic reaction of heat of reaction include?

Definition
The endothermic reaction of heat of reaction includes dehydration and rearrangement.
Term
What does an exothermic reaction include?
Definition
An exothermic reaction is a heat of reaction that is acid + heat --> salt + water + heat.
Term

What is an exothermic reaction?

Definition

An exothermic reaction is a neutralization reaction that is a heat of reaction that can be described as acid + base --> salt + water + heat.

Term
What is the endothermic reaction?
Definition
The endothermic reaction is a heat of reaction that includes dehydration and rearrangement.
Term
What is the formula for glucose?
Definition
Glucose is C6H12O6.
Term
What is the formula for sucrose?
Definition
The formula for sucrose is C11H22O12.
Term

How do you convert Celcius to Farenheit?

Definition
You take Celcius and multiply it by (9/5) and add 32 to get Farenheit.
Term
How does yeast reproduce?
Definition
Yeast reproduces with asexual budding.
Term
What gives alcohol its taste?
Definition
Alcohol gives aldehydes and keytones its taste.
Term
Why is it unlikely that apple cider from a store would ferment?
Definition

It is unlikely that apple cider would ferment because it has been pasteurized or flash heated.

Term
What is yeast?
Definition
Yeast is a small organism fungi that converts sugars to alcohol and oxygen.
Term
What is fructose?
Definition
Fructose is C6H12O6.
Term
What is sucrose?
Definition
Sucrose is C12H22O11.
Term
What is iso-sweet?
Definition
Iso-sweet is high fructose corn syrup.
Term
What does fermentation include?
Definition
Fermentation includes sucrose + yeast --> carbon dioxide + ethanol.
Term

What does sucrose + yeast turn into for fermentation?

Definition
Sucrose + Yeast --> Carbon dioxide + ethanol
Term
What does wood alcohol include?
Definition
Wood alcohol includes methanol.
Term
What is methanol (wood alcohol) used for?
Definition
Methanol is used as a solvent.
Term
What does grain alcohol include?
Definition
Grain alcohol includes ethanol.
Term

What are the common uses of grain alcohol (ethanol)?

Definition
The common uses of grain alcohol (ethanol) are gasoline, beverages, additive, and a solvent.
Term
What is the rubbing alcohol?
Definition
The rubbing alcohol includes isopropyl alcohol.
Term

How does the % alcohol compute to the proof?

Definition
The % alcohol is multiplied by two to be the proof.
Term
What is fractional distillation?
Definition

Fractional distillation is the separation of a mixture into fractions that differ in BOILING POINTS.

 

Simple distillation is the same process achieved to a higher degree resulting in PURE COMPOUNDS.

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