Question 1

In an indoor fire in a poorly ventilated room, what can the room fill with?

Accepted Answer

A) Flammable materials created through the total combustion of other materials 
B) Flames 
C) Soot particles 
D) Flammable compounds created through incomplete combustion 
A) Flammable materials created through the total combustion of other materials 
B) Flames 
C) Soot particles 
D) Flammable compounds created through incomplete combustion

Question 2

In the compound H2SO4, what is the oxidation number of S?

Accepted Answer

A) 0 
B) +6 
C) -2 
D) -4 
A) 0 
B) +6 
C) -2 
D) -4

Question 3

What, besides accelerants, causes wood to char in flooring planks of a deck?

Accepted Answer

A) Nothing 
B) Water, in vapor form, on the planks 
C) The preservative used on the wood of the planks 
D) Air rushing up between the planks 
A) Nothing 
B) Water, in vapor form, on the planks 
C) The preservative used on the wood of the planks 
D) Air rushing up between the planks

Question 4

What is the proper, balanced equation for the complete combustion of propanol (C3H7OH) in oxygen gas?

Accepted Answer

A) 2 C3H7OH + 9 O2 → 3 CO2 + 4 H2O 
B) C3H7OH + 9 O2 → 6 CO2 + 8 H2O 
C) 2 C3H7OH + 9 O2 → 6 CO2 + 8 H2O 
D) C3H7OH + 9 O2 → 3 CO2 + 4 H2O 
A) 2 C3H7OH + 9 O2 → 3 CO2 + 4 H2O 
B) C3H7OH + 9 O2 → 6 CO2 + 8 H2O 
C) 2 C3H7OH + 9 O2 → 6 CO2 + 8 H2O 
D) C3H7OH + 9 O2 → 3 CO2 + 4 H2O

Question 5

When a 500.0 g sample of silica glass changes temperature from 23.0°C to 50.0°C, what amount of heat is involved?

Accepted Answer

A) 18,750 J 
B) 10,125 J 
C) 8,625 J 
D) 25,000 J 
A) 18,750 J 
B) 10,125 J 
C) 8,625 J 
D) 25,000 J

Question 6

In the Richey case, why was the burned rug not considered reliable evidence?

Accepted Answer

It had bee

Question 7

How many kJ of heat are produced for each gram of oxygen consumed in a combustion?

Accepted Answer

A) 4.184 kJ 
B) 31.0 kJ 
C) 13.0 kJ 
D) 0.905 kJ 
A) 4.184 kJ 
B) 31.0 kJ 
C) 13.0 kJ 
D) 0.905 kJ

Question 8

What is heat?

Accepted Answer

A) A mass form transferred from object to object upon contact 
B) An energy form transferred from object to object upon contact 
C) A mass-energy transfer when hot and cold objects come into contact 
D) An energy form transferred from hot to cold objects when they come in contact with each other 
A) A mass form transferred from object to object upon contact 
B) An energy form transferred from object to object upon contact 
C) A mass-energy transfer when hot and cold objects come into contact 
D) An energy form transferred from hot to cold objects when they come in contact with each other

Question 9

When a chemical cold pack is used to treat an athlete's injury, what functions as the heat source?

Accepted Answer

A) The packaging in which the chemicals are housed 
B) The components of the cold pack itself 
C) The atmosphere 
D) The part of the athlete's body where the pack is placed 
A) The packaging in which the chemicals are housed 
B) The components of the cold pack itself 
C) The atmosphere 
D) The part of the athlete's body where the pack is placed

Question 10

In a gas chromatograph the time from injection to the time at which a compound is detected is what?

Accepted Answer

A) The retention time 
B) The lag time 
C) The capillary column time 
D) The injector time 
A) The retention time 
B) The lag time 
C) The capillary column time 
D) The injector time

Question 11

How does a flashover spread?

Accepted Answer

A) Across the ceiling of a room where a fire exists 
B) Through the ventilation system of a house 
C) Across the floor of a room where a fire exists 
D) Through other combustible material in a room where a fire exists 
A) Across the ceiling of a room where a fire exists 
B) Through the ventilation system of a house 
C) Across the floor of a room where a fire exists 
D) Through other combustible material in a room where a fire exists

Question 12

What is the activation energy in a reaction?

Accepted Answer

The energy

Question 13

Why is heat needed to initiate combustion?

Accepted Answer

A) Energy is needed to start the fuel-oxygen reaction. 
B) Liquids and solids need to be converted to vapors. 
C) Neither of the above. 
D) Both of the above. 
A) Energy is needed to start the fuel-oxygen reaction. 
B) Liquids and solids need to be converted to vapors. 
C) Neither of the above. 
D) Both of the above.

Question 14

The term "exothermic," when used to describe a reaction, means what?

Accepted Answer

That the r

Question 15

What does a blank sample determine?

Accepted Answer

A) The air level of organic contaminants 
B) The air level of organic pollutants 
C) The background level of arson containers 
D) The background level of organic compounds 
A) The air level of organic contaminants 
B) The air level of organic pollutants 
C) The background level of arson containers 
D) The background level of organic compounds

Question 16

What does the inner chamber of a calorimeter contain?

Accepted Answer

A) An ignition source and an oxygen environment 
B) The sample and an ignition source 
C) The sample, an ignition source, and an oxygen environment 
D) The sample and an oxygen environment 
A) An ignition source and an oxygen environment 
B) The sample and an ignition source 
C) The sample, an ignition source, and an oxygen environment 
D) The sample and an oxygen environment

Question 17

What is the oxidation number of oxygen in the compound MgO?

Accepted Answer

A) +2 
B) 0 
C) -1 
D) -2 
A) +2 
B) 0 
C) -1 
D) -2

Question 18

What is pyrolysis?

Accepted Answer

A) The decomposition of a solid to form combustible, gaseous compounds. 
B) The decomposition of a gas to form combustible, gaseous compounds. 
C) The decomposition of a solid to form non-combustible materials. 
D) The decomposition of a liquid to form non-combustible materials. 
A) The decomposition of a solid to form combustible, gaseous compounds. 
B) The decomposition of a gas to form combustible, gaseous compounds. 
C) The decomposition of a solid to form non-combustible materials. 
D) The decomposition of a liquid to form non-combustible materials.

Question 19

What is the C10 to C16 fraction of crude oil refinement?

Accepted Answer

A) Kerosene and jet fuel 
B) Diesel fuel 
C) Gasoline 
D) None of the above 
A) Kerosene and jet fuel 
B) Diesel fuel 
C) Gasoline 
D) None of the above

Question 20

How does a gas chromatograph separate compounds?

Accepted Answer

A) By their boiling points and polarity 
B) By their boiling points 
C) By their polarity 
D) None of the above 
A) By their boiling points and polarity 
B) By their boiling points 
C) By their polarity 
D) None of the above

In an indoor fire in a poorly ventilated room, what can the room fill with?

In the compound H₂SO₄, what is the oxidation number of S?

What, besides accelerants, causes wood to char in flooring planks of a deck?

What is the proper, balanced equation for the complete combustion of propanol (C₃H₇OH) in oxygen gas?

When a 500.0 g sample of silica glass changes temperature from 23.0°C to 50.0°C, what amount of heat is involved?

In the Richey case, why was the burned rug not considered reliable evidence?

How many kJ of heat are produced for each gram of oxygen consumed in a combustion?

What is heat?

When a chemical cold pack is used to treat an athlete's injury, what functions as the heat source?

In a gas chromatograph the time from injection to the time at which a compound is detected is what?

How does a flashover spread?

What is the activation energy in a reaction?

Why is heat needed to initiate combustion?

The term "exothermic," when used to describe a reaction, means what?

What does a blank sample determine?

What does the inner chamber of a calorimeter contain?

What is the oxidation number of oxygen in the compound MgO?

What is pyrolysis?

What is the C10 to C16 fraction of crude oil refinement?

How does a gas chromatograph separate compounds?

Understanding Our World With Chemistry

Matter: Properties, Changes and Measurements

Understanding Atoms

Bonding and Reactions

Chemistry of Bonding: Structure and Function of Drug Molecules

Aqueous Solutions: Part I

Aqueous Solutions: Part II

Organic Chemistry and Polymers

Chemistry of Explosions

Applications of Chemical Kinetics

Nuclear Chemistry: Energy, Medicine, Weapons, and Terrorism

Chemical Equilibrium

Introduction to Biochemistry

Filters

Exam 9: Chemistry of Fire and Heat

In an indoor fire in a poorly ventilated room, what can the room fill with?

In the compound H2SO4, what is the oxidation number of S?

What, besides accelerants, causes wood to char in flooring planks of a deck?

What is the proper, balanced equation for the complete combustion of propanol (C3H7OH) in oxygen gas?

When a 500.0 g sample of silica glass changes temperature from 23.0°C to 50.0°C, what amount of heat is involved?

In the Richey case, why was the burned rug not considered reliable evidence?

How many kJ of heat are produced for each gram of oxygen consumed in a combustion?

What is heat?

When a chemical cold pack is used to treat an athlete's injury, what functions as the heat source?

In a gas chromatograph the time from injection to the time at which a compound is detected is what?

How does a flashover spread?

What is the activation energy in a reaction?

Why is heat needed to initiate combustion?

The term "exothermic," when used to describe a reaction, means what?

What does a blank sample determine?

What does the inner chamber of a calorimeter contain?

What is the oxidation number of oxygen in the compound MgO?

What is pyrolysis?

What is the C10 to C16 fraction of crude oil refinement?

How does a gas chromatograph separate compounds?

Understanding Our World With Chemistry

Matter: Properties, Changes and Measurements

Understanding Atoms

Bonding and Reactions

Chemistry of Bonding: Structure and Function of Drug Molecules

Aqueous Solutions: Part I

Aqueous Solutions: Part II

Organic Chemistry and Polymers

Chemistry of Explosions

Applications of Chemical Kinetics

Nuclear Chemistry: Energy, Medicine, Weapons, and Terrorism

Chemical Equilibrium

Introduction to Biochemistry

Filters

In the compound H₂SO₄, what is the oxidation number of S?

What is the proper, balanced equation for the complete combustion of propanol (C₃H₇OH) in oxygen gas?