Question 1

In a photochemical reaction,

Accepted Answer

A)  the chemical reaction is energized by light 
B)  nitrogen dioxide must be present 
C)  ozone is always formed 
D)  none of the above 
A)  the chemical reaction is energized by light 
B)  nitrogen dioxide must be present 
C)  ozone is always formed 
D)  none of the above A

Question 2

What continent is the ozone hole located over?

Accepted Answer

A)  Africa 
B)  Antarctica 
C)  Asia 
D)  North America 
A)  Africa 
B)  Antarctica 
C)  Asia 
D)  North America B

Question 3

Ozone-depleting substances typically contain this element

Accepted Answer

A)  oxygen 
B)  sulfur 
C)  nitrogen 
D)  chlorine 
A)  oxygen 
B)  sulfur 
C)  nitrogen 
D)  chlorine D

Question 4

What does the Chapman cycle illustrate?

Accepted Answer

A)  the formation and destruction of water 
B)  the formation and destruction of carbon dioxide 
C)  the formation and destruction of nitrogen dioxide 
D)  the formation and destruction of ozone 
A)  the formation and destruction of water 
B)  the formation and destruction of carbon dioxide 
C)  the formation and destruction of nitrogen dioxide 
D)  the formation and destruction of ozone

Question 5

Why are scientists worried about the ozone hole?

Accepted Answer

A)  increase in skin cancer 
B)  increase in plant growth 
C)  decrease in ocean temperature 
D)  all of the above 
A)  increase in skin cancer 
B)  increase in plant growth 
C)  decrease in ocean temperature 
D)  all of the above

Question 6

Which type of chemical bond requires the least amount of energy to break?

Accepted Answer

A)  single 
B)  double 
C)  triple 
D)  quadruple 
A)  single 
B)  double 
C)  triple 
D)  quadruple

Question 7

Which molecule is used as a replacement for CFC?

Accepted Answer

A)  HFC-134a 
B)  HCFC-123 
C)  HFC-152a 
D)  all of the above 
A)  HFC-134a 
B)  HCFC-123 
C)  HFC-152a 
D)  all of the above

Question 8

What type of radiation is absorbed by molecular oxygen in the stratosphere?

Accepted Answer

A)  UV-A 
B)  UV-B 
C)  UV-C 
D)  visible 
A)  UV-A 
B)  UV-B 
C)  UV-C 
D)  visible

Question 9

Which type of radiation is effective at damaging DNA?

Accepted Answer

A)  UV-A 
B)  UV-B 
C)  UV-C 
D)  visible 
A)  UV-A 
B)  UV-B 
C)  UV-C 
D)  visible

Question 10

Chlorofluorocarbons, such as CCl2F2, can cause problems in the upper atmosphere by destroying

Accepted Answer

A)  nitrogen oxides 
B)  oxygen 
C)  ozone 
D)  polynuclear hydrocarbons 
A)  nitrogen oxides 
B)  oxygen 
C)  ozone 
D)  polynuclear hydrocarbons

Question 11

Which molecule absorbs UV-B radiation?

Accepted Answer

A)  O2 
B)  O3 
C)  CO2 
D)  NO2 
A)  O2 
B)  O3 
C)  CO2 
D)  NO2

Question 12

Why must the ozone layer in the stratosphere be protected?

Accepted Answer

A)  ozone poisons incoming, unwanted aliens 
B)  ozone absorbs some incoming ultraviolet light 
C)  ozone burns up incoming meteorites 
D)  ozone prevents oxygen from escaping the earth 
A)  ozone poisons incoming, unwanted aliens 
B)  ozone absorbs some incoming ultraviolet light 
C)  ozone burns up incoming meteorites 
D)  ozone prevents oxygen from escaping the earth

Question 13

What does one Dobson unit (DU) equal?

Accepted Answer

A)  1 ppb 
B)  1 ppm 
C)  100 ppb 
D)  100 ppm 
A)  1 ppb 
B)  1 ppm 
C)  100 ppb 
D)  100 ppm

Question 14

Approximately how many ozone molecules can one chlorine atom derived from one CFC molecule react with?

Accepted Answer

A)  1 
B)  100 
C)  1000 
D)  100000 
A)  1 
B)  100 
C)  1000 
D)  100000

Question 15

What chemical bond is broken by a photon of light in a typical CFC molecule?

Accepted Answer

A)  C-H 
B)  Cl-Cl 
C)  H-Cl 
D)  C-Cl 
A)  C-H 
B)  Cl-Cl 
C)  H-Cl 
D)  C-Cl

Question 16

What type of radiation has a wavelength of 350 nm?

Accepted Answer

A)  UV-A 
B)  UV-B 
C)  UV-C 
D)  visible 
A)  UV-A 
B)  UV-B 
C)  UV-C 
D)  visible

Question 17

Which type of radiation is the most energetic?

Accepted Answer

A)  UV-A 
B)  UV-B 
C)  UV-C 
D)  visible 
A)  UV-A 
B)  UV-B 
C)  UV-C 
D)  visible

In a photochemical reaction,

What continent is the ozone hole located over?

Ozone-depleting substances typically contain this element

What does the Chapman cycle illustrate?

Why are scientists worried about the ozone hole?

Which type of chemical bond requires the least amount of energy to break?

Which molecule is used as a replacement for CFC?

What type of radiation is absorbed by molecular oxygen in the stratosphere?

Which type of radiation is effective at damaging DNA?

Chlorofluorocarbons, such as CCl₂F₂, can cause problems in the upper atmosphere by destroying

Which molecule absorbs UV-B radiation?

Why must the ozone layer in the stratosphere be protected?

What does one Dobson unit (DU) equal?

Approximately how many ozone molecules can one chlorine atom derived from one CFC molecule react with?

What chemical bond is broken by a photon of light in a typical CFC molecule?

What type of radiation has a wavelength of 350 nm?

Which type of radiation is the most energetic?

Living in a World of Chemistry

The Chemical View of Matter

Atoms and the Periodic Table

The Air We Breathe

Chemical Bonding and States of Matter

Carbon Dioxide and the Greenhouse Effect

Chemical Reactivity: Chemicals in Action

Acid-Base Reactions

Oxidation-Reduction Reactions

Water, Water Everywhere but Not a Drop to Drink

Energy and Hydrocarbons

Nuclear Changes and Nuclear Power

Organic Chemicals and Polymers

The Chemistry of Life

Nutrition: the Basis of Healthy Living

Chemistry and Medicine

The Chemistry of Useful Materials

Filters

Exam 7: Chlorofluorocarbons and the Ozone Layer

In a photochemical reaction,

What continent is the ozone hole located over?

Ozone-depleting substances typically contain this element

What does the Chapman cycle illustrate?

Why are scientists worried about the ozone hole?

Which type of chemical bond requires the least amount of energy to break?

Which molecule is used as a replacement for CFC?

What type of radiation is absorbed by molecular oxygen in the stratosphere?

Which type of radiation is effective at damaging DNA?

Chlorofluorocarbons, such as CCl2F2, can cause problems in the upper atmosphere by destroying

Which molecule absorbs UV-B radiation?

Why must the ozone layer in the stratosphere be protected?

What does one Dobson unit (DU) equal?

Approximately how many ozone molecules can one chlorine atom derived from one CFC molecule react with?

What chemical bond is broken by a photon of light in a typical CFC molecule?

What type of radiation has a wavelength of 350 nm?

Which type of radiation is the most energetic?

Living in a World of Chemistry

The Chemical View of Matter

Atoms and the Periodic Table

The Air We Breathe

Chemical Bonding and States of Matter

Carbon Dioxide and the Greenhouse Effect

Chemical Reactivity: Chemicals in Action

Acid-Base Reactions

Oxidation-Reduction Reactions

Water, Water Everywhere but Not a Drop to Drink

Energy and Hydrocarbons

Nuclear Changes and Nuclear Power

Organic Chemicals and Polymers

The Chemistry of Life

Nutrition: the Basis of Healthy Living

Chemistry and Medicine

The Chemistry of Useful Materials

Filters

Chlorofluorocarbons, such as CCl₂F₂, can cause problems in the upper atmosphere by destroying