Question 1

In home water treatment by the process of _____, hard water is passed through an ion-exchange material called a zeolite.

Accepted Answer

A)  coagulation 
B)  aeration 
C)  chlorination 
D)  carbon filtering 
E)  water softening 
A)  coagulation 
B)  aeration 
C)  chlorination 
D)  carbon filtering 
E)  water softening

Question 2

A crystal structure is found in:

Accepted Answer

A)  gaseous state. 
B)  liquid state. 
C)  solid state. 
D)  all states of matter. 
E)  plasma state. 
A)  gaseous state. 
B)  liquid state. 
C)  solid state. 
D)  all states of matter. 
E)  plasma state.

Question 3

The strength of cohesive forces in a substance:

Accepted Answer

A)  is directly proportional to the substance's melting and boiling points. 
B)  is inversely proportional to the substance's melting and boiling points. 
C)  is directly proportional to the substance's melting point and inversely proportional to the substance's boiling point. 
D)  is inversely proportional to the substance's melting point and directly proportional to the substance's boiling point. 
E)  is independent of the substance's melting and boiling points. 
A)  is directly proportional to the substance's melting and boiling points. 
B)  is inversely proportional to the substance's melting and boiling points. 
C)  is directly proportional to the substance's melting point and inversely proportional to the substance's boiling point. 
D)  is inversely proportional to the substance's melting point and directly proportional to the substance's boiling point. 
E)  is independent of the substance's melting and boiling points.

Question 4

Arrange CH4, Cl2, and CO2 in order of increasing strength of dispersion forces (least to the greatest).

Accepted Answer

A)  CH422 
B)  Cl22 4 
C)  CH422 
D)  Cl24 2 
E)  CO2 24 
A)  CH422 
B)  Cl22 4 
C)  CH422 
D)  Cl24 2 
E)  CO2 24

Question 5

Which of these substances contains hydrogen bonds?

Accepted Answer

A)  HBr 
B)  CH3F 
C)  CH3OH 
D)  CH3OCH3 
E)  SiH4 
A)  HBr 
B)  CH3F 
C)  CH3OH 
D)  CH3OCH3 
E)  SiH4

Question 6

Which of the following statements about liquids is incorrect ?

Accepted Answer

A)  Liquids are highly disordered when compared with solids. 
B)  Liquids have high molecular motion when compared with solids. 
C)  Liquids have a relatively fixed shape when compared with solids. 
D)  Liquids have strong molecular attractions when compared with gases. 
E)  Liquids have a relatively low compressibility when compared with gases. 
A)  Liquids are highly disordered when compared with solids. 
B)  Liquids have high molecular motion when compared with solids. 
C)  Liquids have a relatively fixed shape when compared with solids. 
D)  Liquids have strong molecular attractions when compared with gases. 
E)  Liquids have a relatively low compressibility when compared with gases.

Question 7

A 4.50 L sample of sea water contains 32.7 mg of strontium. Determine the concentration of strontium in mg/L.

Accepted Answer

A)  0.138 mg/L 
B)  7.27 mg/L 
C)  28.2 mg/L 
D)  32.7 mg/L 
E)  37.2 mg/L 
A)  0.138 mg/L 
B)  7.27 mg/L 
C)  28.2 mg/L 
D)  32.7 mg/L 
E)  37.2 mg/L

Question 8

Which of these is/are not a source of chemical contamination of ground water?

Accepted Answer

A)  Human waste 
B)  Pesticides 
C)  Industrial wastes 
D)  Atmospheric emissions 
E)  Household solvents 
A)  Human waste 
B)  Pesticides 
C)  Industrial wastes 
D)  Atmospheric emissions 
E)  Household solvents

Question 9

Which of these statements about boiling point is /are  incorrect ?
I. Boiling occurs when there is  sufficient molecular energy to convert a liquid to a gas.
II. The stronger the cohesive forces, the higher the boiling point.
III. Boiling results in the cleavage of chemical bonds.

Accepted Answer

A)  I only 
B)  II only 
C)  III only 
D)  I and III 
E)  II and III 
A)  I only 
B)  II only 
C)  III only 
D)  I and III 
E)  II and III

Question 10

Rank Ne, HBr, CH  3  OH, and Ar in order of increasing  boiling point (lowest to highest).

Accepted Answer

A)  Ne 3OH 3OH 3OH 
E)  Ar 3OH < HBr 
A)  Ne 3OH 3OH 3OH 
E)  Ar 3OH < HBr

Question 11

For solutions in water , a part per million is roughly equivalent to _____.

Accepted Answer

A)  g/mL 
B)  mg/mL 
C)  g/L 
D)  mg/L 
E)  kg/mL 
A)  g/mL 
B)  mg/mL 
C)  g/L 
D)  mg/L 
E)  kg/mL

Question 12

Which of these substances would have the highest vapor pressure?

Accepted Answer

A)  CH3OH 
B)  C2H6 
C)  SO2 
D)  H2O 
E)  NH3 
A)  CH3OH 
B)  C2H6 
C)  SO2 
D)  H2O 
E)  NH3

Question 13

Which of the following is the equivalent of 1.00 M?

Accepted Answer

A)  1.00 ppm solution 
B)  1.00% solution 
C)  1.00ppb solution 
D)  18.00% solution 
E)  Insufficient data 
A)  1.00 ppm solution 
B)  1.00% solution 
C)  1.00ppb solution 
D)  18.00% solution 
E)  Insufficient data

Question 14

Which substance is likely to have the greatest dispersion force?

Accepted Answer

A)  CH3CH2CH2CH3 
B)  CH3CH2CH2CH2CH3 
C)  CH3CH2CH2CH2CH2CH3 
D)  CH3CH2CH2CH2CH2CH2CH3 
E)  The dispersion force is about the same for all the listed molecules. 
A)  CH3CH2CH2CH3 
B)  CH3CH2CH2CH2CH3 
C)  CH3CH2CH2CH2CH2CH3 
D)  CH3CH2CH2CH2CH2CH2CH3 
E)  The dispersion force is about the same for all the listed molecules.

Question 15

Which of these is/are an inorganic contaminant?

Accepted Answer

A)  Benzene 
B)  Carbon tetrachloride 
C)  TCE 
D)  Nitrates 
E)  Gasoline 
A)  Benzene 
B)  Carbon tetrachloride 
C)  TCE 
D)  Nitrates 
E)  Gasoline

In home water treatment by the process of _____, hard water is passed through an ion-exchange material called a zeolite.

A crystal structure is found in:

The strength of cohesive forces in a substance:

Arrange CH₄, Cl₂, and CO₂ in order of increasing strength of dispersion forces (least to the greatest).

Which of these substances contains hydrogen bonds?

Which of the following statements about liquids is incorrect ?

A 4.50 L sample of sea water contains 32.7 mg of strontium. Determine the concentration of strontium in mg/L.

Which of these is/are not a source of chemical contamination of ground water?

Which of these statements about boiling point is /are incorrect ? I. Boiling occurs when there is sufficient molecular energy to convert a liquid to a gas. II. The stronger the cohesive forces, the higher the boiling point. III. Boiling results in the cleavage of chemical bonds.

Rank Ne, HBr, CH ₃ OH, and Ar in order of increasing boiling point (lowest to highest).

For solutions in water , a part per million is roughly equivalent to _____.

Which of these substances would have the highest vapor pressure?

Which of the following is the equivalent of 1.00 M?

Which substance is likely to have the greatest dispersion force?

Which of these is/are an inorganic contaminant?

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Exam 12: The Liquids and Solids Around Us: Especially Water

In home water treatment by the process of _____, hard water is passed through an ion-exchange material called a zeolite.

A crystal structure is found in:

The strength of cohesive forces in a substance:

Arrange CH4, Cl2, and CO2 in order of increasing strength of dispersion forces (least to the greatest).

Which of these substances contains hydrogen bonds?

Which of the following statements about liquids is incorrect ?

A 4.50 L sample of sea water contains 32.7 mg of strontium. Determine the concentration of strontium in mg/L.

Which of these is/are not a source of chemical contamination of ground water?

Which of these statements about boiling point is /are incorrect ? I. Boiling occurs when there is sufficient molecular energy to convert a liquid to a gas. II. The stronger the cohesive forces, the higher the boiling point. III. Boiling results in the cleavage of chemical bonds.

Rank Ne, HBr, CH 3 OH, and Ar in order of increasing boiling point (lowest to highest).

For solutions in water , a part per million is roughly equivalent to _____.

Which of these substances would have the highest vapor pressure?

Which of the following is the equivalent of 1.00 M?

Which substance is likely to have the greatest dispersion force?

Which of these is/are an inorganic contaminant?

Molecular Reasons

The Chemists Toolbox

Atoms and Elements

Molecules, Compounds, and Chemical Reactions

Chemical Bonding

Organic Chemistry

Light and Color

Nuclear Chemistry

Energy for Today

Energy for Tomorrow: Solar and Other Renewable Energy Sources

The Air Around Us

Acids and Bases: the Molecules Responsible for Sour and Bitter

Oxidation and Reduction

The Chemistry of Household Products

Biochemistry and Biotechnology

Drugs and Medicine: Healing, Helping, and Hurting

The Chemistry of Food

Nanotechnology Online Only

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Arrange CH₄, Cl₂, and CO₂ in order of increasing strength of dispersion forces (least to the greatest).

Rank Ne, HBr, CH ₃ OH, and Ar in order of increasing boiling point (lowest to highest).