Question 1

What is the name given to the violent eruptions on the surface of the sun resulting in the ejection of myriad electrons and protons into space?

Accepted Answer

A) solar vulcanizations 
B) solar lighting 
C) stellar explosions 
D) solar explosions 
E) solar flares 
A) solar vulcanizations 
B) solar lighting 
C) stellar explosions 
D) solar explosions 
E) solar flares

Question 2

Which of the following is not a source of CO2?

Accepted Answer

A) fermentation of sugar 
B) oxidation of carbohydrates 
C) decomposition of carbonates by heat or acid 
D) photosynthesis 
A) fermentation of sugar 
B) oxidation of carbohydrates 
C) decomposition of carbonates by heat or acid 
D) photosynthesis

Question 3

The main effect of the biosphere on the chemistry of the Earth's crust has been to

Accepted Answer

A) create a reducing atmosphere. 
B) create an oxidizing atmosphere. 
C) increase the relative humidity. 
D) decrease the relative humidity. 
E) increase the level of atmospheric carbon dioxide. 
A) create a reducing atmosphere. 
B) create an oxidizing atmosphere. 
C) increase the relative humidity. 
D) decrease the relative humidity. 
E) increase the level of atmospheric carbon dioxide.

Question 4

The Earth's core consists mainly of

Accepted Answer

A) Ni. 
B) O. 
C) Al. 
D) Si. 
E) Fe. 
A) Ni. 
B) O. 
C) Al. 
D) Si. 
E) Fe.

Question 5

Which one of the following would slow the rate of increase of atmospheric CO2?

Accepted Answer

A) building and operating more coal-fired power plants 
B) more use of catalytic converters in cars to produce complete combustion 
C) use of hydrogen fuel produced using solar or nuclear energy 
D) conversion of nuclear power plants to methane-burning power plants 
E) clearing and burning the tropical rain forests 
A) building and operating more coal-fired power plants 
B) more use of catalytic converters in cars to produce complete combustion 
C) use of hydrogen fuel produced using solar or nuclear energy 
D) conversion of nuclear power plants to methane-burning power plants 
E) clearing and burning the tropical rain forests

Question 6

Due to a highway accident,150 L of concentrated hydrochloric acid (12.0 M)is released into a lake containing 5.0 × 105 m3 of water.If the pH of this lake was 7.0 prior to the accident,what is the pH of the lake following the accident?

Accepted Answer

A) 5.44 
B) 8.56 
C) 8.44 
D) 5.56 
E) 2.44 
A) 5.44 
B) 8.56 
C) 8.44 
D) 5.56 
E) 2.44

Question 7

What is the name of the chemical with a very foul smell that is a preservative used to preserve the body of dead people?

Accepted Answer

A) formaldehyde 
B) hydrogen peroxide 
C) hydrochloric acid 
D) formic acid 
E) potassium permanganate 
A) formaldehyde 
B) hydrogen peroxide 
C) hydrochloric acid 
D) formic acid 
E) potassium permanganate

Question 8

Why do molecules become IR-active?

Accepted Answer

A) Because they are in constant motion. 
B) Because they can absorb IR radiation (a photon of a specific wavelength in the IR region)because their dipole moments constantly change as the bond lengths change. 
C) Because they vibrate at low temperatures. 
D) Because their net dipole is zero. 
E) Because they are very close together. 
A) Because they are in constant motion. 
B) Because they can absorb IR radiation (a photon of a specific wavelength in the IR region)because their dipole moments constantly change as the bond lengths change. 
C) Because they vibrate at low temperatures. 
D) Because their net dipole is zero. 
E) Because they are very close together.

Question 9

What is readily liquefied,relatively inert,nontoxic,noncombustible,and volatile and has been used as a coolant in refrigerators and air conditioners but is harmful to the ozone layer in the stratosphere?

Accepted Answer

A) antifreeze 
B) SO2 
C) ammonia 
D) 0.444 m 
E) Freon 
A) antifreeze 
B) SO2 
C) ammonia 
D) 0.444 m 
E) Freon

Question 10

What are the secondary pollutants from automobile exhaust?

Accepted Answer

The answer of What are the secondary pollutants from automobile...

Question 11

What is the layer of the atmosphere called which is the uppermost layer of the atmosphere and where the increase in temperature in this region is the result of the bombardment of molecular oxygen and nitrogen and atomic species by energetic particles,such as electrons and protons,from the sun?

Accepted Answer

A) outer atmosphere 
B) mesosphere 
C) thermosphere 
D) troposphere 
E) stratosphere 
A) outer atmosphere 
B) mesosphere 
C) thermosphere 
D) troposphere 
E) stratosphere

Question 12

_______________ is the major mechanism by which molecular oxygen is regenerated from carbon dioxide and water.

Accepted Answer

The answer of _______________ is the major mechanism by which...

Question 13

What is defined as the conversion of molecular nitrogen into nitrogen compounds?

Accepted Answer

A) nitrogen fixation 
B) nitrogen conversion 
C) nitrogenation 
D) nitrogen turnover 
E) nitrogen cycle 
A) nitrogen fixation 
B) nitrogen conversion 
C) nitrogenation 
D) nitrogen turnover 
E) nitrogen cycle

Question 14

Ozone protects us from ultraviolet light by

Accepted Answer

A) reflecting the light from the ozone layer. 
B) reacting with oxygen atoms to form O2. 
C) dissociating into O2 and oxygen atoms. 
D) None of the. 
A) reflecting the light from the ozone layer. 
B) reacting with oxygen atoms to form O2. 
C) dissociating into O2 and oxygen atoms. 
D) None of the.

Question 15

When radon decays it produces Po-214 and Po-218.This means that

Accepted Answer

A) a gas (radon)is converted into a solid (Po). 
B) radon decays into nonhazardous products. 
C) after the decay there is no danger due to radioactivity. 
D) the polonium can be swept out of the basement.. 
E) None of the. 
A) a gas (radon)is converted into a solid (Po). 
B) radon decays into nonhazardous products. 
C) after the decay there is no danger due to radioactivity. 
D) the polonium can be swept out of the basement.. 
E) None of the.

Question 16

Which of the following areas of the atmosphere is closest to Earth's surface?

Accepted Answer

A) troposphere 
B) stratosphere 
C) mesosphere 
D) thermosphere 
E) ionosphere 
A) troposphere 
B) stratosphere 
C) mesosphere 
D) thermosphere 
E) ionosphere

Question 17

Ozone is formed in the atmosphere by the combination of oxygen molecules with

Accepted Answer

A) chlorofluorocarbons. 
B) hydrocarbons. 
C) oxygen atoms. 
D) CO2. 
E) ClO. 
A) chlorofluorocarbons. 
B) hydrocarbons. 
C) oxygen atoms. 
D) CO2. 
E) ClO.

Question 18

Acid rain is precipitation having a pH that is

Accepted Answer

A) above 7. 
B) below 5.5. 
C) below 7. 
D) above 8.6. 
E) above 10. 
A) above 7. 
B) below 5.5. 
C) below 7. 
D) above 8.6. 
E) above 10.

Question 19

Which of the following is emitted into the atmosphere when a volcano erupts?

Accepted Answer

A) H2S 
B) N2 
C) HCl 
D) sulfuric acid aerosol 
E) All of the answers are correct. 
A) H2S 
B) N2 
C) HCl 
D) sulfuric acid aerosol 
E) All of the answers are correct.

Question 20

The Aurora Borealis is due to

Accepted Answer

A) disruptions of the ozone layer. 
B) relaxation of excited oxygen atoms and ionized N2 molecules. 
C) the production of NO.D.lightning. 
A) disruptions of the ozone layer. 
B) relaxation of excited oxygen atoms and ionized N2 molecules. 
C) the production of NO.D.lightning.

Exam 21: Environmental Chemistry

What is the name given to the violent eruptions on the surface of the sun resulting in the ejection of myriad electrons and protons into space?

Which of the following is not a source of CO2?

The main effect of the biosphere on the chemistry of the Earth's crust has been to

The Earth's core consists mainly of

Which one of the following would slow the rate of increase of atmospheric CO2?

Due to a highway accident,150 L of concentrated hydrochloric acid (12.0 M)is released into a lake containing 5.0 × 105 m3 of water.If the pH of this lake was 7.0 prior to the accident,what is the pH of the lake following the accident?

What is the name of the chemical with a very foul smell that is a preservative used to preserve the body of dead people?

Why do molecules become IR-active?

What is readily liquefied,relatively inert,nontoxic,noncombustible,and volatile and has been used as a coolant in refrigerators and air conditioners but is harmful to the ozone layer in the stratosphere?

What are the secondary pollutants from automobile exhaust?

What is the layer of the atmosphere called which is the uppermost layer of the atmosphere and where the increase in temperature in this region is the result of the bombardment of molecular oxygen and nitrogen and atomic species by energetic particles,such as electrons and protons,from the sun?

_______________ is the major mechanism by which molecular oxygen is regenerated from carbon dioxide and water.

What is defined as the conversion of molecular nitrogen into nitrogen compounds?

Ozone protects us from ultraviolet light by

When radon decays it produces Po-214 and Po-218.This means that

Which of the following areas of the atmosphere is closest to Earth's surface?

Ozone is formed in the atmosphere by the combination of oxygen molecules with

Acid rain is precipitation having a pH that is

Which of the following is emitted into the atmosphere when a volcano erupts?

The Aurora Borealis is due to

Chemistry: the Central Science

Atoms Molecules and Ions

Stoichiometry Ratios of Combination

Reactions in Aqueous Solutions

Thermochemistry

Quantum Theory and the Electronic Structure of Atoms

Electron Configuration and the Periodic Table

Chemical Bonding I Basic Concepts

Chemical Bonding Ii Molecular Geometry and Bonding Theories

Gases

Intermolecular Forces and the Physical Properties of Liquids and Solids

Modern Materials

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Entropy Free Energy and Equilibrium

Electrochemistry

Nuclear Chemistry

Coordination Chemistry

Metallurgy and the Chemistry of Metals

Nonmetallic Elements and Their Compounds

Organic Chemistry

Filters

Which of the following is not a source of CO₂?

Which one of the following would slow the rate of increase of atmospheric CO₂?

Due to a highway accident,150 L of concentrated hydrochloric acid (12.0 M)is released into a lake containing 5.0 × 10⁵ m³ of water.If the pH of this lake was 7.0 prior to the accident,what is the pH of the lake following the accident?