UNIT 11 SELF-TEST
Part I: Matching
Match the letters in Column B with the numbers in Column A.
Mark the appropriate letters on the Scantron form for the corresponding
number.
Column
A
Column B
1. amino acid
a. an organic compound that
contains the hydroxyl group and carbonyl group on the same carbon.
2. ketone
b. a class of compounds
characterized by a fruity or pleasant smell
3. carbohydrate
c. hydrocarbon that contains
only single covalent bonds
4. ester
d. a compound that contains a
carbonyl group on the end carbon of an organic molecule
5. saturated compound
e. an saturated hydrocarbon
that contains a hydroxyl group
6. carboxylic acid
ab. a class of bio-molecules
that includes fats, oils, waxes, triglycerides and steriods
7. alcohol
ac. a compound that contains
an acidic and basic functional group
8. aldehyde
ad. a compound containing a
carbonyl group on a carbon attached to two other carbons.
9. lipid
ae.
a compound that contains a carbon-carbon double or triple bond
10.
unsaturated compound
bc.
a class of compounds with the elements C, H and O approximately in this
ratio CxH2xOx
11.
Which of
the following is an alcohol? (a)
HCHO
(b) CH3CCH3
(c) CH3OH (d) CH3OCH3
12.
Structural
isomers have: (a) the same
molecular formula. (b) the same
physical and chemical properties. (c)
the same molecular structures. (d)
all of these.
13.
Which of
the following structures does not represent an aldehyde? (a) CH3COCH3
(b)
(c)
(d)
14.
Which of
the following compounds is an ester? (a) HCHO (b)
CH3COOCH3
(c) CH3COOH
(d) CH3OCH3
15.
Which
compound would be the most soluble in water? (a) HCHO (b) CH3COCH3
(c) CH3OH (d) CH3OCH3
16.
Which of
the following compounds is saturated? (a)
C6H6 (b) C2H4
(c) C2H2
(d) C2H6
17.
The
chemical reactions of organic compounds are largely determined by:
(a) the physical state of the compound.
(b) the type of bonding within the compound.
(c) the identity of the functional group(s) within the compound.
(d) whether the compound is saturated or unsaturated.
18.
Which
group among the following gives fruits their characteristic flavor and color?
(a) alcohols (b) aldehydes (c) esters (d)
carboxylic acids
19.
Starch,
table sugar, cotton and wood are all examples of: (a) alcohols.
(b) carbohydrates. (c)
lipids. (d) proteins.
20.
Hydrogen
bonding cannot occur between the following pairs of molecules:
(a) water-alcohol. (b)
water-carboxylic acid. (c)
water-amine. (d) water-alkane.
21.
What
component is common to all nucleic acids: (a)
ribose sugar. (b) phosphate.
(c) uracil. (d) all of
these.
22.
The
primary structure of proteins is determined by: (a) a--helices and b sheets. (b) the amino
acid sequence. (c) the overall 3-D
shape of the protein. (d) all of
the above.
23.
The
tertiary structure of proteins is determined by: (a) a--helices and b sheets. (b) the amino
acid sequence. (c) the overall 3-D
shape of the protein. (d) the
geometric arrangement of two or more polypeptide chains.
24.
All of
the following reactions can be described as dehydration synthesis, except: (a) the linking of glucose and fructose into a disaccharide.
(b) the forming of a peptide bond. (c)
the forming of a wax from a fatty acid and an alcohol.
(d) the linking of two nucleic acid strands into a double helix.
25.
The
molecular formula C3H6O2 can describe these
compounds: (a) alcohol and ether.
(b) alcohol and ester. (c) aldehyde and ketone. (d) ester and carboxylic acid.
26.
When a
carboxylic acid and an alcohol react in the presence of an acid, what is the
class of compound formed? (a) ether
(b) ester (c) aldehyde (d) ketone
27.
Classify
each of these statements as always true, AT; sometimes true, ST; or never true,
NT.
(a)
The first
organic compound synthesized was urea.
(b)
Because a
carbon atom contains 6 valence electrons, it forms 3 covalent bonds.
(c)
The
methane molecule has a tetrahedral shape.
(d)
Hydrocarbons
are saturated.
(e)
A
functional group is a specific arrangement of atoms in an organic compound that
is capable of characteristic reactions.
PART III: Problems: Solve the following problems in the space provided.
Show work.
28.
Draw a
structural formula for each of the following descriptions:
(a)
a 4
carbon alcohol
(b) a 5 carbon unsaturated amine
(c) a 2 carbon carboxylic acid
(d) a 4 carbon ketone
29.
Draw four
structural isomers of C6H14.
30.
Identify
the asymmetric carbon in this compound.
(a)
CH3CCCCH3
(b) CH3CCCH3
31.
Draw two
structural isomers with the molecular formula C3H6O.
Name the class of compound.
32.
Name the
three classes of compound that can hydrogen bond within a group of molecules of
the same compound and with water. State
the effect of this ability on these compounds properties.
33.
Identify
the type of isomer among the following.
(a)
(b)
(c)
34.
Identify
the functional group in each of the following compounds and name the class of
compound they are in:
(a)
CH3CH2OOCCH3
(b) CH3CHCH2CH3
(c) CH3CHCH2CH3 (d) CH3CH2CH2CHO
PART
IV: Short Answer: Answer the following question in the space provided.
35.
Ethyl
alcohol (CH3CH2OH) and dimethyl ether (CH3OCH3)
are structural isomers of one another but their properties are significantly
different. Predict the differences
between their solubility in water and their boiling points and explain these
differences based upon their structures and the predominant intermolecular
forces.
36.
Distinguish
among common mono-, di- and polysaccharides.
Give an example of each.
37.
Name
three types of lipids. Describe the
structure and physical properties of lipids.
38.
Describe
the bonding in a protein molecule. What
are the essential functional groups involved?
39.
Draw a
triglyceride lipid.
40.
Draw a
dipeptide with side chains, --CH3, -- CH2OH
(Name the individual amino acids with the side chains
for bonus.)
41.
Specify
the two types of nucleic acids and state three differences between them.
42.
Give two
functions for each of these biological molecules.
(a)
carbohydrates
(b)
lipids
(c) proteins
(d) nucleic acids
