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Hydrocarbons Chapter 25
Test Description: Hydrocarbons chapter 25
Instructions: Answer all questions to get your test result.
1) Which type of bonding arrangement between carbon atoms is found in diamonds?
A
globe shaped
B
tetrahedral shaped
C
sheets or layers
D
an unpredictable arrangement
2) Allotropic forms of carbon include all of the following except
A
diamond.
B
fullerenes.
C
alkanes.
D
graphite.
3) Which of the allotropic forms of carbon is frequently used as a lubricant?
A
fullerenes
B
alkanes
C
graphite
D
diamond
4) How many bonds can a carbon atom form?
A
two
B
one
C
three
D
four
5) Forms of the same element that have different bonding arrangements and properties are called
A
allotropes.
B
isomers.
C
fullerenes.
D
polymers.
6) The number of valence electrons in a neutral carbon atom is
A
six.
B
two.
C
eight.
D
four.
7) The first organic compound produced in the laboratory in 1828 was
A
a sugar.
B
a carbohydrate.
C
DNA.
D
urea
8) Organic chemistry is now defined as the study of
A
synthetic compounds.
B
natural compounds.
C
compounds made in living organisms.
D
carbon compounds.
9) Hydrocarbons are most widely known for their use as
A
drugs.
B
preservatives.
C
antibiotics.
D
fuels.
10) Because hydrogen and carbon have similar electronegativities, hydrocarbon molecules are classified as mostly
A
metallic.
B
ionic.
C
nonpolar.
D
polar.
*select an answer for all questions
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