STUDENT NAME: ______________________

STUDENT NO: __________________                SECTION NO. ________________

COMPREHENSIVE SCIENCES DEPARTMENT
PHYSICAL SCIENCES
EXAMINATION FOUR

     All questions should be answered on the separate answer sheet provided.

     Select the letter of the choice that BEST answers the question:

1.   The subject of organic chemistry, as we consider it today, is limited to

          a.  carbon compounds
b.  carbon compounds
c.  carbon compounds
d.  carbon compounds
e.  carbon compounds

2.   The group of organic chemistry that provides our fuels, oils, and natural gas is:

          a.  halogens
b.  bases
c.  salts
d.  anaerobics
e.  hydrocarbons

3.  One class of organic compounds that provides some types of plastics--for example, polyethylene and vinyl--is the

          a.  aromatics
b.  hydrocarbons
c.  organic acids
d.  alcohols
e.  esters

4.  The best-known aromatic hydrocarbon compound is:

          a.  formic acid
b.  nitric acid
c.  benzene
d.  methane
e.  propane

5.   The hydroxide group is always found in the class of organic compounds called:

          a.  hydrocarbons
b.  bases
c.  isomers
d.  polymers
e.  alcohols

6.   That class of organic compounds that contains the carboxyl group is the:

          a.  alcohols
b.  acids
c.  amines
d.  ethers
e.  benzenes

7.   The pleasant aroma of flowers is primarily due to the presence of:

          a.  alcohols
b.  acids
c.  esters
d.  ethers
e.  hydrocarbons

8.   Objectionable odors such as those produced by decaying fish result from the liberation of:

          a.  esters
b.  acids
c.  benzene
d.  amines
e.  aldehydes

9.   Those organic compounds such as wood, sugar, and starch that contain numerous hydroxyl groups are called:

           a.  proteins
 b.  alcohols
 c.  aldehydes
 d.  saccharins
 e.  carbohydrates

10. The characteristic of carbon generally responsible for the existence of large numbers of carbon compounds is the:

           a.  metallic and nonmetallic properties
 b.  number of electrons carbon can gain, lose, or share
 c.  capability to share electrons with other carbon atoms
 d.  high degree of chemical reactiveness
 e.  large number of isotopes present

11. The excessive use of pesticides:

           a.  has destroyed all unwanted insect life
 b.  has destroyed all beneficial insect life
 c.  has inhibited most plant growth
 d.  has caused many species of insects to develop a resistance to some pesticides
 e.  has destroyed all unwanted animals but not all unwanted insects

12. The problems caused by the use of herbicides and pesticides seem best resolved by:

           a.  immediate stoppage of their application
 b.  the application of massive amounts of all effective ones in an all-out battle against
 unwanted animal, plant, and insect life
 c.  moderate and thoughtful application
 d.  discontinuing the application of herbicides
 e.  discontinuing the application of pesticides

13.  A new detergent on the market was found to contain sodium phosphate. If the detergent were not recalled, what effect might it have on our environment?

          a.  The detergent might stop the growth of algae.
b.  The detergent may indirectly destroy aquatic life.
c.  Aquatic life may thrive on the new detergent.
d.  The new detergent will directly pollute the air.
e.  The new detergent will have no effect on our environment.

14.  Unwanted ingredients in our atmosphere include:

          a.  oxygen
b.  nitrogen
c.  helium
d.  particulate matter
e.  water vapor

15.  The greatest source of air pollution in the United States is:

          a.  automobiles
b.  industries
c.  sources of electrical energy
d.  airplanes
e.  methods of sewage treatment

16.  Most of the detrimental effects on our environment produced as coal is extracted are caused by poor quality-controlled:

          a.  deep mining procedures
b.  strip-mining procedures
c.  underground mine fires
d.  coal-treatment procedures
e.  transportation procedures

17.  A large portion of the energy we use eventually assumes the forms of:

          a.  light
b.  electricity
c.  heat
d.  chemical energy
e.  sound

18.  A primary product of incomplete combustion is:

          a.  carbon dioxide
b.  sulfur dioxide
c.  ozone
d.  methane
e.  carbon monoxide

19.  A relatively recent concern for our environment has been brought about by

          a.  new pesticides
b.  new herbicides
c.  newly accepted farming practices
d.  longer human life spans
e.  the conrinued application of DDT

20.  The greatest energy reserve in the United States today is:

          a.  coal
b.  natural gas
c.  petroleum
d.  water
e.  none of the above

On a separate sheet, answer the following in one or two paragraphs

21.  EXTRA CREDIT

          Omitting the hydrocarbons, name four families of organic compounds and give a characteristic of each