Question 1

The long hydrocarbon tails of soap molecules are:

Accepted Answer

A) hydrophilic and attracted to water 
B) hydrophobic and attracted to water 
C) hydrophobic and attracted to oils 
D) hydrophilic and attracted to oils

Question 2

Which of the following compounds has the highest boiling point?

Accepted Answer

A) CH4 
B) CH3CH3 
C) CH3CH2CH2CH3 
D) CH3CH2CH3

Question 3

The variables kept constant in Boyle's law are, ________ and ________.

Accepted Answer

The answer of The variables kept constant in Boyle's law...

Question 4

Which of the following compounds cannot exhibit hydrogen bonding?

Accepted Answer

A) H2O 
B) NH3 
C) HF 
D) CH4

Question 5

In a lipid bilayer:

Accepted Answer

A) the hydrophilic heads of the molecules point towards each other 
B) all the molecules are triglycerides 
C) the hydrophobic heads point to the hydrophilic tails 
D) the hydrophobic tails of the molecules point toward each other

Question 6

Stronger attractive forces between molecules in a solid predict lower melting points.

Accepted Answer

A) True 
 B)False

Question 7

Fats are generally ________ at room temperature and are obtained from ________.

Accepted Answer

A) solids; animals 
B) liquids; plants 
C) solids; plants 
D) liquids; animal

Question 8

Which intermolecular force exists between all molecules regardless of polarity?

Accepted Answer

The answer of Which intermolecular force exists between all molecules...

Question 9

At the boiling point, the vapor pressure is equal to the ________ pressure.

Accepted Answer

The answer of At the boiling point, the vapor pressure...

Question 10

Opposite charges attract.

Accepted Answer

A) True 
 B)False

Question 11

What is standard atmospheric pressure (760 mmHg)in inches mercury (in Hg)? (2.54 cm = 1 in)

Accepted Answer

A) 1930 in Hg 
B) 101 in Hg 
C) 76.00 in Hg 
D) 29.92 in Hg

Question 12

The weakest attractive force among these is:

Accepted Answer

A) London force 
B) dipole-dipole force 
C) hydrogen bonding 
D) ion-dipole force

Question 13

In order to exhibit hydrogen bonding, the H atom must be bonded to one of the three elements:

Accepted Answer

The answer of In order to exhibit hydrogen bonding, the...

Question 14

A sample of oxygen at room temperature occupies a volume of 500. L at 1.75 atm. What would be the volume of this gas at 2.50 atm at the same temperature?

Accepted Answer

A) 350. L 
B) 0)00286 L 
C) 875 L 
D) 250. L

Question 15

CH3OCH3 can make two donor hydrogen bonds with water.

Accepted Answer

A) True 
 B)False

Question 16

What chemical process is used to convert oils into fats and semi-solids?

Accepted Answer

A) Hydration 
B) Hydrogenation 
C) Saponification 
D) Esterification

Question 17

The variables kept constant in Charles' law are, ________ and ________.

Accepted Answer

The answer of The variables kept constant in Charles' law...

Question 18

What is the difference between the terms hydrophobic and hydrophilic?

Accepted Answer

The answer of What is the difference between the terms...

Question 19

Let's compare two compounds of similar molar mass in which A is comprised of nonpolar molecules and B composed of polar molecules. Which of the following statements is true?

Accepted Answer

A) Both compounds have the same boiling point. 
B) B will not boil. 
C) B will boil at a lower temperature than will A. 
D) B will boil at a higher temperature than will A.

Question 20

When NaCl dissolves in water, the force of attraction that exists between Na+ and H2O is called:

Accepted Answer

A) dipole-dipole 
B) ion-ion 
C) hydrogen bonding 
D) ion-dipole

Exam 7: Whats the Attraction State Changes, Solubility, and Lipids

The long hydrocarbon tails of soap molecules are:

Which of the following compounds has the highest boiling point?

The variables kept constant in Boyle's law are, and .

Which of the following compounds cannot exhibit hydrogen bonding?

In a lipid bilayer:

Stronger attractive forces between molecules in a solid predict lower melting points.

Fats are generally at room temperature and are obtained from .

Which intermolecular force exists between all molecules regardless of polarity?

At the boiling point, the vapor pressure is equal to the ________ pressure.

Opposite charges attract.

What is standard atmospheric pressure (760 mmHg) in inches mercury (in Hg) ? (2.54 cm = 1 in)

The weakest attractive force among these is:

In order to exhibit hydrogen bonding, the H atom must be bonded to one of the three elements:

A sample of oxygen at room temperature occupies a volume of 500. L at 1.75 atm. What would be the volume of this gas at 2.50 atm at the same temperature?

CH₃OCH₃can make two donor hydrogen bonds with water.

What chemical process is used to convert oils into fats and semi-solids?

The variables kept constant in Charles' law are, and .

What is the difference between the terms hydrophobic and hydrophilic?

Let's compare two compounds of similar molar mass in which A is comprised of nonpolar molecules and B composed of polar molecules. Which of the following statements is true?

When NaCl dissolves in water, the force of attraction that exists between Na⁺ and H₂O is called: