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CHEM 219 Module 2 Exam Newest 2026-2027 Actual
Exam Preparation With Complete Questions And
Correct Answers With Rationales | Already Graded
A+||Brand New Version!!
What is the important thing to know about the physical
properties of alkanes. - ANSWER-They will show similar trends
in terms of their physical properties.
What does the physical properties of a molecule refer to? -
ANSWER-Characteristics like melting point, boiling point,
density, solubility.
How do you compare the boiling point of alkanes? - ANSWER-
The longer the length of carbon, the higher the Boiling point.
When it is branched, it can have a higher boiling point, as long
as it isn't the parent chain that is branched.
Are alkanes soluble in water? - ANSWER-They are water-
insoluble.
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Are alkanes polar or non-polar? - ANSWER-Almost non-polar
What is hydrogen bonding? - ANSWER-The water molecules
are attracted to each other like magnets because of it's electron
rich O atom possessing a -charge and its electron poor H
possessing a + charge
What will a mixture of alkane and water make? - ANSWER-A
two layer-biphasic system. It will float on top of water. since its
density is less than 1g/ml
Are liquid alkanes used as solvents? - ANSWER-Yes for other
non polar substances.
When compared to other polar molecules of similar weight, are
alkanes lower or higher in melting and boiling points? -
ANSWER-They are lower.
What are Van der Waals forces? - ANSWER-The attractive
forces between molecules.
The polarization in VDWF's are: - ANSWER-Temporary and
weak
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What is the relationship between branching and VDWF? -
ANSWER-As you branch out you gain more surface area and
lower the VDWF. Which lowers the BP and MP
Alkanes can adopt different conformations, What does this
mean? - ANSWER-This means that it can change shapes as it
can rotate around bonds.
Hydrogen bonding and VDWFS are classifies as nonbonding
intermolecular forces, what does this mean? - ANSWER-That
they are attractive forces between molecules that are not true
bonds in the sense of sharing or donating.
What are conformers? - ANSWER-Different shapes of
molecules that are derived by rotations of single bonds.
What does the Newman projection do? - ANSWER-It shows the
conformation of molecules when looking down a particular bond
axis.
CHEM 219 Module 2 Exam Newest 2026-2027 Actual
Exam Preparation With Complete Questions And
Correct Answers With Rationales | Already Graded
A+||Brand New Version!!
What is the important thing to know about the physical
properties of alkanes. - ANSWER-They will show similar trends
in terms of their physical properties.
What does the physical properties of a molecule refer to? -
ANSWER-Characteristics like melting point, boiling point,
density, solubility.
How do you compare the boiling point of alkanes? - ANSWER-
The longer the length of carbon, the higher the Boiling point.
When it is branched, it can have a higher boiling point, as long
as it isn't the parent chain that is branched.
Are alkanes soluble in water? - ANSWER-They are water-
insoluble.
,2|Page
Are alkanes polar or non-polar? - ANSWER-Almost non-polar
What is hydrogen bonding? - ANSWER-The water molecules
are attracted to each other like magnets because of it's electron
rich O atom possessing a -charge and its electron poor H
possessing a + charge
What will a mixture of alkane and water make? - ANSWER-A
two layer-biphasic system. It will float on top of water. since its
density is less than 1g/ml
Are liquid alkanes used as solvents? - ANSWER-Yes for other
non polar substances.
When compared to other polar molecules of similar weight, are
alkanes lower or higher in melting and boiling points? -
ANSWER-They are lower.
What are Van der Waals forces? - ANSWER-The attractive
forces between molecules.
The polarization in VDWF's are: - ANSWER-Temporary and
weak
, 3|Page
What is the relationship between branching and VDWF? -
ANSWER-As you branch out you gain more surface area and
lower the VDWF. Which lowers the BP and MP
Alkanes can adopt different conformations, What does this
mean? - ANSWER-This means that it can change shapes as it
can rotate around bonds.
Hydrogen bonding and VDWFS are classifies as nonbonding
intermolecular forces, what does this mean? - ANSWER-That
they are attractive forces between molecules that are not true
bonds in the sense of sharing or donating.
What are conformers? - ANSWER-Different shapes of
molecules that are derived by rotations of single bonds.
What does the Newman projection do? - ANSWER-It shows the
conformation of molecules when looking down a particular bond
axis.
