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SCH 4U Name
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Organic Chemistry Unit Test!
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Making Connections (12 marks)
1. You examined the polymer found in diapers, sodium polyacrylate, in detail both on day 1 of
the unit and later during research. Use your knowledge to answer the following questions:
a. Describe specific physical and chemical properties (total of 3 – at least one of each)
that connect to the way we use them. (3 marks)
b. Imagine one alternative use for this chemical based on its properties and describe
the use (2 marks).
2. Alex prefers to wear a polyester jacket over a polyethylene jacket. With reference to
specific structures and properties explain why this is a good choice. Include at least one of
the structural diagrams as part of your answer (either a polyester or polyethylene). (4
marks)
SCH 4U Name
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3. Chemicals in artificial flavourings smell the same as the real thing. For example, we made
‘fake’ banana odour and it smelled the same as real bananas. Yet some people say that the
use of such ‘fake’ scents is not environmentally friendly.
a. Describe one reason that supports that artificial smells are bad for the environment
in a specific way. (2 marks)
b. Describe one method that could be used to produce artificial scents that would be
considered “green”. (1 marks)
Thinking and Inquiry (25 marks)
1. A friend has 3 containers that contain some organic molecules! The containers are not labelled,
but one holds isopropanol, another propanal and the third holds propane.
a. Draw a structural diagram for each of the molecules (3 marks)
b. Explain how you could use physical properties to tell the substances apart – be sure to
be specific as to what would be observed. (3 marks)
c. Explain how you could use chemical properties to tell the substances apart – be sure to
be specific as to what would be observed (3 marks)
SCH 4U Name
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2.
For the following: draw reaction scheme(s), name the type of reaction, name each
intermediate:
a. production of ethyl methyl ether (methoxy ethane) from an alkene and an alcohol. (3
marks)
b. Production of a dichloroethane from an alkane (2 marks)
c. Polymerization of 1,2-ethanediol with propandioic acid (3 marks) (show at least 2 links
of the polymer)
3. You love trends! Below is a table similar to the one we made for the carboxylic acids in classtime.
a. Use your chemistry skills to fill in the blanks (note, you need only say yes/no for
predicted solubility and just rank the melting points to show the trend). (6 marks)
Name
Structural diagram
Predicted
solubility
in Water
Predicted
Solubility in
Hexane
Melting Point (just
rank high to low)
ethanoic acid
butanoic acid
decanoic acid
b. Explain the trend in melting point in your table above. (2 marks)
SCH 4U Name
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Knowledge and Understanding (10 marks)
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1.
When two alcohols undergo a self condensation, what is formed?
a. liquid alcohol
d. an aldehyde
b. a ketone
e. an ether
c. an ester
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2.
How many actual double bonds does the benzene ring possess?
a. 4
d. 1
b. 3
e. 0
c. 2
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3.
What is the correct name for the above compound?
a. 2,3-dimethylbutane
b. Hexane
c. 2-methylpentane
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4.
d.
e.
2,2-dimethylbutane
isohexane
Which of the following is a secondary alcohol?
a.
d.
CH3OH
b.
e.
CH3CH2OH
c.
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5.
The correct name for the compound given above is which of the following?
a. 1,3-cyclopentadiene
c. 1,4-cyclopentene
b. 1,4-cyclopentadiene
d. 1,3-cyclopentene
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6.
Of the five names listed below, four contain deliberate errors. Which is the only name is correct?
a. 2-pentanal
d. 1,2-dimethylpropanoate
b. 2,3-dichloropentane
e.
c. 3-methylpropanoic acid
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7.
The reaction of CH3CH=CH-CH=CH2 with excess bromine gives chiefly
a. 1,2-dibromo-3-pentene
b. 3,4-dibromo-1-pentene
c. 1,4-dibromo-2-pentene
d. a mixture of the above three compounds
e. none of the above three compounds
SCH 4U Name
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8.
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9.
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10.
The molecule above is which of the following?
a. a saturated fatty acid
d. palmitin
b. a triglyceride
e. a natural oil found in grain
c. an unsaturated fatty acid
When the carbon chain length of a fatty acid increases, which of the following occurs?
a. its polarity decreases and its solubility in water increases
b. its polarity increases and its solubility in water decreases
c. its polarity increases and its solubility in water increases
d. its polarity decreases and its solubility in water decreases
The polymer formed from lactic acid (structure shown below) is used for surgical sutures. The polymer structure is best
represented by which of the following?
(lactic acid)
a.
b.
c.
d.
STUDENT FEEDBACK
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This is the mark I think that I will get on this test: _______________
This is how long I studied for this test: _____________________
This is how I studied for this test (circle all that apply):
Read/Reviewed notes
questions
Studied with a friend
made notes
someone asked me questions
did old test
made study charts Did all review
used the review sheet made flash cards