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Chem 30 Ch 9 Review

Total questions: 27

Worksheet time: 33mins

Name
Class
Date
1.

Match the following:

Categorize the following

alkane

saturated

alkene

cyclo alkane

alkyne

diene

cyclo alkene

aliphatic

low solubility

CnH(2n+2)
CnH2n
CnH(2n-2)
All of the above
2.

Label the diagram.

a)longest chains
b)shortest chains
c)most soluble
d)least soluble
e)crude oil
f)oil sand
1
2
3
1)
2)
3)
3.

Label the diagram.

a)highest boiling point
b)lowest boiling point
c)motor oil
d)gasoline
1
2
3
4
1)
2)
3)
4)
4.

Are the following molecules considered organic or inorganic?

Categorize the following

CH3COOH

NaCN

CO2

HCO3

CH3Br

H2SO4

C2H5OH

C4H8O2

organic
inorganic
5.

Which of these molecules is an isomer of nonane?

a)

i

b)

ii

c)

iv

d)

v

e)

none of the above

6.

Which of these molecules is 2,4-dimethylhexane?

a)

v

b)

vi

c)

vii

d)

ix

e)

none of the above

7.

Choose the correct name for this molecule.

a)

2-ethyl-4-methylhexane

b)

3,5-dimethylheptane

c)

4-ethyl-2-methylhexane

d)

3-methyl-5-ethylhexane

8.

What can you do to decrease the amount of carbon monoxide produced by a fire.

a)

add more oxygen

b)

decrease the temperature

c)

add more fuel

d)

protect it from air currents

9.

Which of the following does NOT describe this molecule?

a)

aromatic molecule

b)

high solubility in water

c)

toxic

d)

C6H6

10.

Name the following molecule.

a)

5-ethyl-2,3-dimethylhept-4-ene

b)

2,3-dimethyl-5-ethylhept-4-ene

c)

5,6-dimethyl-3-ethylhept-3-ene

d)

3-ethyl-5,6-dimethylhept-3-ene

11.

Which molecules are isomers of each other (select all)?

a)

ii

b)

iii

c)

v

d)

vi

12.

What is the chemical formula for ethylcyclopentene?

a)

C7H16

b)

C7H14

c)

C7H12

d)

C5H10

13.

Match each molecule to the correct hydrocarbon family.

a)

C5H12

1.

alkane

b)

2.

cyclical alkane

c)

3.

alkyne

d)

3-phenyloctane

4.

aromatic

e)

hept-2,3-diene

5.

alkene

14.

Which of the following would NOT improve the efficiency of combustion in a gasoline engine.

a)

increasing oxygen intake

b)

using branched alkanes (not straight chain)

c)

adding alcohols like ethanol to gasoline

d)

increasing pressure before the spark plug ignites

15.

Match the reaction to its type.

a)

breaking larger molecules in two

1.

cracking

b)

turns unsaturated hydrocarbons into saturated ones by adding hydrogen

2.

addition

c)

CxHy + O2 --> CO2 + H2O

3.

complete combustion

d)

produces carbon monoxide or soot

4.

incomplete combustion

e)

changes straight chained hydrocarbons into branched isomers

5.

alkylation

16.

How many carbon atoms are in 3-ethyl-2-methylcyclopentene?

a)

5

b)

6

c)

7

d)

8

17.

How many hydrogen atoms are in 3-ethyl-2-methylcyclopentene?

a)

8

b)

14

c)

16

d)

18

18.

Order these hydrocarbon families in order from least to most stable.

a)

alkynes

b)

alkenes

c)

alkanes

d)

aromatics

1)
2)
3)
4)
19.

Select the correct name for this molecule.

a)

o-dimethylbenzene

b)

m-dimethylbenzene

c)

p-dimethylbenzene

d)

1,2-methylbenzene

20.

Select the correct name for this molecule.

a)

o-dimethylbenzene

b)

m-dimethylbenzene

c)

p-dimethylbenzene

d)

1,2-methylbenzene

21.

Select the correct name for this molecule.

a)

o-dimethylbenzene

b)

m-dimethylbenzene

c)

p-dimethylbenzene

d)

1,2-methylbenzene

22.

Name the molecule.

a)

2-ethyl-3-methyl

pent-2-ene

b)

2-ethyl-3-methyl

pent-1-ene

c)

3,4-dimethylhexene

d)

2,3-diethylbut-1-ene

23.

Which of the following molecules is not an isomer of C7H12?

a)

heptyne

b)

methylcyclohexene

c)

4-ethylpent-1,2-diene

d)

cycloheptyne

24.

Which molecule is saturated?

a)

benzene

b)

propyne

c)

C4H8

d)

C25H52

25.

Which of the following would have a high octane rating.

a)

straight chain octane

b)

straight chain heptane

c)

branched octane isomers

d)

aromatic molecules

26.

Which of the following would be non-polar?

a)

alkanes

b)

alkenes

c)

aromatics

d)

all of the above

27.

Which of the following would be soluble in water?

a)

heptane

b)

cyclooctane

c)

phenylethane

d)

none of the above

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