Question 1

What percentage of the world's sickness is caused by water-borne diseases?

Accepted Answer

A)  0.041% 
B)  4.7% 
C)  26% 
D)  80% 
E)  98% 
A)  0.041% 
B)  4.7% 
C)  26% 
D)  80% 
E)  98% D

Question 2

Molarity is defined as the number of moles of _____ per liter of _____.

Accepted Answer

A)  solvent; solution 
B)  solution; solvent 
C)  solute; solution 
D)  solution; solute 
E)  solvent; solute 
A)  solvent; solution 
B)  solution; solvent 
C)  solute; solution 
D)  solution; solute 
E)  solvent; solute C

Question 3

Which of these is a benefit of water's unique freezing properties?

Accepted Answer

A)  Water freezes on the surface of lakes, allowing marine life underneath to  survive during winter. 
B)  Water freezes at the bottom of the ocean, cooling volcanic eruptions. 
C)  Water freezes in the cracks within rocks, preventing erosion of mountains. 
D)  Water freezes in the cells of living bodies, protecting them from external virus es. 
E)  Water freezes in living bodies, minimizing their dependence on external sources of water. 
A)  Water freezes on the surface of lakes, allowing marine life underneath to  survive during winter. 
B)  Water freezes at the bottom of the ocean, cooling volcanic eruptions. 
C)  Water freezes in the cracks within rocks, preventing erosion of mountains. 
D)  Water freezes in the cells of living bodies, protecting them from external virus es. 
E)  Water freezes in living bodies, minimizing their dependence on external sources of water. A

Question 4

Which of these substances would have the weakest cohesive forces in combination with extremely high molecular mobility?

Accepted Answer

A)  H2O(l) 
B)  CH4(g) 
C)  KCl(s) 
D)  Hg(l) 
E)  Au(s) 
A)  H2O(l) 
B)  CH4(g) 
C)  KCl(s) 
D)  Hg(l) 
E)  Au(s)

Question 5

Which of these is a result of dumping human waste near or directly into ground or surface waters?

Accepted Answer

A)  Hard water 
B)  Soft water 
C)  Biological contaminants 
D)  Radioactive contaminants 
E)  Inorganic contaminants 
A)  Hard water 
B)  Soft water 
C)  Biological contaminants 
D)  Radioactive contaminants 
E)  Inorganic contaminants

Question 6

Which of the following statements about solids is/are correct?
I. Solids have lower kinetic energy than liquids.
II. Molecules present in solids   are in fixed positions.
III. The shape of a solid is independent of the container that holds it.

Accepted Answer

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

Question 7

Which of these is not a method for measuring the concentration of a solution?

Accepted Answer

A)  Percent by mass 
B)  Percent by volume 
C)  Molarity 
D)  Parts per million 
E)  Milliliters per gram 
A)  Percent by mass 
B)  Percent by volume 
C)  Molarity 
D)  Parts per million 
E)  Milliliters per gram

Question 8

Rank NH  3  , SiH  4  , and CH  4  in order of increasing   boiling point (lowest to highest).

Accepted Answer

A)  NH3 4 4 
B)  NH3 4 4 
C)  SiH4 3 4 
D)  SiH4 4 3 
E)  CH4 4 3 
A)  NH3 4 4 
B)  NH3 4 4 
C)  SiH4 3 4 
D)  SiH4 4 3 
E)  CH4 4 3

Question 9

What is the concentration of a solution made by dissolving 90.0 g of acetic acid (CH  3  COOH) in water that gives 0.250 L of solution (molar mass of CH  3  COOH = 60.0 g/mol)?

Accepted Answer

A)  1.20 M 
B)  2.00 M 
C)  6.00 M 
D)  0.600 M 
E)  0.360 M 
A)  1.20 M 
B)  2.00 M 
C)  6.00 M 
D)  0.600 M 
E)  0.360 M

Question 10

What is the concentration in molarity of a solution made by dissolving 20.0 grams of KOH in 150.0 mL of H  2  O  (molar mass of KOH = 56.1056 g/mol)?

Accepted Answer

A)  0.133 M 
B)  0.421 M 
C)  2.37 M 
D)  4.35 M 
E)  7.5 M 
A)  0.133 M 
B)  0.421 M 
C)  2.37 M 
D)  4.35 M 
E)  7.5 M

Question 11

Which of these substances is polar?

Accepted Answer

A)  F2 
B)  N2 
C)  Ne 
D)  CH4 
E)  NH3 
A)  F2 
B)  N2 
C)  Ne 
D)  CH4 
E)  NH3

Question 12

In the process of water treatment, _____ is the step in which water is sprayed into a fine mist allowing volatile compounds to evaporate.

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 13

Which substance has the highest boiling point?

Accepted Answer

A)  Ne 
B)  Kr 
C)  He 
D)  Xe 
E)  Ar 
A)  Ne 
B)  Kr 
C)  He 
D)  Xe 
E)  Ar

Question 14

Which of these types of water contamination poses immediate health risks upon consumption?

Accepted Answer

A)  Organic 
B)  Radioactive 
C)  Biological 
D)  Lead 
E)  Volatile organic 
A)  Organic 
B)  Radioactive 
C)  Biological 
D)  Lead 
E)  Volatile organic

Question 15

Substance A contains stronger cohesive forces than substance B. Which of the following statements is true?

Accepted Answer

A)  Substance A will have a higher boiling point and higher vapor pressure than substance B. 
B)  Substance A will have a lower boiling point and lower vapor pressure than substance B. 
C)  Substance A will have a lower boiling point and higher vapor pressure than substance B. 
D)  Substance A will have a higher boiling point and lower vapor pressure than substance B. 
E)  Substance A will have the same boiling point and vapor pressure as substance B. 
A)  Substance A will have a higher boiling point and higher vapor pressure than substance B. 
B)  Substance A will have a lower boiling point and lower vapor pressure than substance B. 
C)  Substance A will have a lower boiling point and higher vapor pressure than substance B. 
D)  Substance A will have a higher boiling point and lower vapor pressure than substance B. 
E)  Substance A will have the same boiling point and vapor pressure as substance B.

Question 16

Which of these substances is polar?

Accepted Answer

A)  CO2 
B)  SO2 
C)  Cl2 
D)  CH4 
E)  BF3 
A)  CO2 
B)  SO2 
C)  Cl2 
D)  CH4 
E)  BF3

Question 17

The point at which a liquid gets converted to a gas is known as the _____.

Accepted Answer

A)  boiling point 
B)  melting point 
C)  sublimation point 
D)  deposition point 
E)  freezing point 
A)  boiling point 
B)  melting point 
C)  sublimation point 
D)  deposition point 
E)  freezing point

Question 18

Which of these elements is/are the primary component(s) in hard water?
I. Magnesium
II. Iron
III. Calcium
IV. Sodium

Accepted Answer

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

Question 19

What is the concentration in molarity when 10.00 grams of K  3  PO  4  is dissolved in H  2  O to give 350.0 mL of solution (molar mass of K  3  PO  4  = 212.3 g/mol)?

Accepted Answer

A)  0.0285 M 
B)  0.0565 M 
C)  0.121 M 
D)  0.135 M 
E)  0.607 M 
A)  0.0285 M 
B)  0.0565 M 
C)  0.121 M 
D)  0.135 M 
E)  0.607 M

Question 20

_____ is a naturally occurring process in which water flows from an area of low solute concentration to one of high solute concentration.

Accepted Answer

A)  Osmosis 
B)  Aeration 
C)  Filtering 
D)  Softening 
E)  Coagulation 
A)  Osmosis 
B)  Aeration 
C)  Filtering 
D)  Softening 
E)  Coagulation

What percentage of the world's sickness is caused by water-borne diseases?

Molarity is defined as the number of moles of _ per liter of _.

Which of these is a benefit of water's unique freezing properties?

Which of these substances would have the weakest cohesive forces in combination with extremely high molecular mobility?

Which of these is a result of dumping human waste near or directly into ground or surface waters?

Which of the following statements about solids is/are correct? I. Solids have lower kinetic energy than liquids. II. Molecules present in solids are in fixed positions. III. The shape of a solid is independent of the container that holds it.

Which of these is not a method for measuring the concentration of a solution?

Rank NH ₃ , SiH ₄ , and CH ₄ in order of increasing boiling point (lowest to highest).

What is the concentration of a solution made by dissolving 90.0 g of acetic acid (CH ₃ COOH) in water that gives 0.250 L of solution (molar mass of CH ₃ COOH = 60.0 g/mol)?

What is the concentration in molarity of a solution made by dissolving 20.0 grams of KOH in 150.0 mL of H ₂ O (molar mass of KOH = 56.1056 g/mol)?

Which of these substances is polar?

In the process of water treatment, _____ is the step in which water is sprayed into a fine mist allowing volatile compounds to evaporate.

Which substance has the highest boiling point?

Which of these types of water contamination poses immediate health risks upon consumption?

Substance A contains stronger cohesive forces than substance B. Which of the following statements is true?

Which of these substances is polar?

The point at which a liquid gets converted to a gas is known as the _____.

Which of these elements is/are the primary component(s) in hard water? I. Magnesium II. Iron III. Calcium IV. Sodium

What is the concentration in molarity when 10.00 grams of K ₃ PO ₄ is dissolved in H ₂ O to give 350.0 mL of solution (molar mass of K ₃ PO ₄ = 212.3 g/mol)?

_____ is a naturally occurring process in which water flows from an area of low solute concentration to one of high solute concentration.

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

What percentage of the world's sickness is caused by water-borne diseases?

Molarity is defined as the number of moles of _____ per liter of _____.

Which of these is a benefit of water's unique freezing properties?

Which of these substances would have the weakest cohesive forces in combination with extremely high molecular mobility?

Which of these is a result of dumping human waste near or directly into ground or surface waters?

Which of the following statements about solids is/are correct? I. Solids have lower kinetic energy than liquids. II. Molecules present in solids are in fixed positions. III. The shape of a solid is independent of the container that holds it.

Which of these is not a method for measuring the concentration of a solution?

Rank NH 3 , SiH 4 , and CH 4 in order of increasing boiling point (lowest to highest).

What is the concentration of a solution made by dissolving 90.0 g of acetic acid (CH 3 COOH) in water that gives 0.250 L of solution (molar mass of CH 3 COOH = 60.0 g/mol)?

What is the concentration in molarity of a solution made by dissolving 20.0 grams of KOH in 150.0 mL of H 2 O (molar mass of KOH = 56.1056 g/mol)?

Which of these substances is polar?

In the process of water treatment, _____ is the step in which water is sprayed into a fine mist allowing volatile compounds to evaporate.

Which substance has the highest boiling point?

Which of these types of water contamination poses immediate health risks upon consumption?

Substance A contains stronger cohesive forces than substance B. Which of the following statements is true?

Which of these substances is polar?

The point at which a liquid gets converted to a gas is known as the _____.

Which of these elements is/are the primary component(s) in hard water? I. Magnesium II. Iron III. Calcium IV. Sodium

What is the concentration in molarity when 10.00 grams of K 3 PO 4 is dissolved in H 2 O to give 350.0 mL of solution (molar mass of K 3 PO 4 = 212.3 g/mol)?

_____ is a naturally occurring process in which water flows from an area of low solute concentration to one of high solute concentration.

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

Filters

Molarity is defined as the number of moles of _ per liter of _.

Rank NH ₃ , SiH ₄ , and CH ₄ in order of increasing boiling point (lowest to highest).

What is the concentration of a solution made by dissolving 90.0 g of acetic acid (CH ₃ COOH) in water that gives 0.250 L of solution (molar mass of CH ₃ COOH = 60.0 g/mol)?

What is the concentration in molarity of a solution made by dissolving 20.0 grams of KOH in 150.0 mL of H ₂ O (molar mass of KOH = 56.1056 g/mol)?

What is the concentration in molarity when 10.00 grams of K ₃ PO ₄ is dissolved in H ₂ O to give 350.0 mL of solution (molar mass of K ₃ PO ₄ = 212.3 g/mol)?