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Hazmat Ch.2 test questions
Terms in this set (79)
The measurable characteristics of a chemical are called __________ properties.
A ________ change occurs when a chemical undergoes a change at the molecular level, usually with a release of some form of energy.
Rusting is an example of what type of change?
What is the expansion ratio of propane?
What is the flash point of gasoline?
What is the approximate flash point of diesel fuel?
What is it called when there is too much fuel in a fuel/air mixture?
Too rich/too lean
How is flammable range related to the relative danger of a substance?
The wider the range, the more dangerous the substance is.
What does it mean if a substance's vapor density is 2.3?
It will sink in air
What mnemonic helps fire fighters remember a set of lighter-than-air gases?
4H MEDIC ANNA
Normal Temperature and Pressure (NTP) for vapor pressures assume a standard ambient temperature of:
__________ is to liquids as vapor density is to gases.
What will a liquid with a specific gravity of 0.7 do in water?
Float on top
Corrosives can be broken down into:
acids and bases
At what pH is a substance neither acidic nor basic?
How is the LD50 typically expressed?
Milligrams per kilogram
Which term refers to the residue of a chemical that has been released and has come into contact with people, the environment, and animals?
Which term refers to a material capable of posing an unreasonable risk to health, safety, or the environment?
What is secondary contamination?
A contaminated person or object contaminating someone else, such as a rescuer
What mnemonic helps fire fighters remember the seven categories of harm that can be caused by terrorism agents or other hazardous materials?
What type of changes can chemicals undergo when subjected to outside influences, such as heat, cold, and pressure?
When the letters LD or LC are followed by a number, what does that number indicate?
The percentage of test subjects that will die when exposed to a specified amount
When a chemical change occurs, the event is usually accompanied by:
the release of some form of energy.
What is the temperature at which a liquid continuously gives off vapors?
Flammable liquids with low boiling points are dangerous because:
they may produce large volumes of flammable vapor at relatively low temperatures
What is the temperature at which a flammable liquid will ignite without the need for an external ignition source?
What is it called when there is not enough fuel in a fuel/air mixture?
What characteristic of a gas is quantified as its vapor density?
Its weight relative to air
What is the vapor density of air?
What does the C stand for in 4H MEDIC ANNA?
How does the vapor pressure of a liquid relate to its rate of evaporation?
The greater the vapor pressure, the faster a liquid will evaporate
Vapor pressures are usually reported in references at an assumed standard temperature of 20ºC. Approximately what temperature is that, in everyday terms?
What quantity is the weight of a liquid as compared to an equal volume of water?
What is the specific gravity of water?
What term refers to the ability of a material to cause damage on contact to skin, eyes, or other body parts?
Which of the following pH values would indicate a strong acid?
What is one toxic chemical found in most smoke caused by fire?
Which is a type of radiation?
________ identify(ies) the hazard as a liquid, solid, or gas
State of matter
What term describes the volume increase that occurs when a liquid material changes to a gas?
What is the term for a catastrophic failure of a pressurized cylinder of liquid?
A change in the state of a material is known as a ________ change.
The alteration of the molecular nature of a material is known as a ________ change.
What is the boiling point of water?
What is the standard atmospheric pressure at sea level?
What is one of the most important aspects to consider when looking at the fire potential of a flammable liquid?
What is the temperature at which a liquid fuel gives off sufficient vapor such that when an ignition source is present the vapors will ignite?
What is the temperature at which sustained combustion will occur?
Which term refers to the concentration of a gas or vapor in air that will burn if provided with a source of ignition?
________ reflects an amount of vapor mixed with a volume of air.
What is the term for the pressure exerted by the vapor of a liquid until the vapor and the liquid are in equilibrium?
What will gasoline or diesel fuel do when water is applied?
Float to the top```
What is the term for the ability of a substance to dissolve in water?
What is used as a measurement of the corrosive strength of a substance?
Which particle has a positive charge?
Which particle does not have an electrical charge?
Which particle has a negative electrical charge?
What term refers to the process where unstable atoms of an element decay to a different state and emit excess energy in the form of particles or waves?
Which is the most energetic type of radiation?
What is the term for the process by which people, animals, the environment, and equipment are subjected to contact with a hazardous material?
If a victim is twitching, what agent would you suspect he or she has been exposed to?
What mnemonic is used to summarize the more common signs and symptoms of nerve agent exposure?
Which of the following is the most toxic of the weapons-grade nerve agents?
Sulfur mustard and Lewisite are examples of:
What type of agent prevents the body from using oxygen?
What type of agent is designed to incapacitate rather than kill?
What agent is also known as a riot control agent?
What is the process by which toxic substances are brought into the body through the respiratory system?
What is the process by which hazardous materials enter the body by permeating the skin?
What is the process by which chemicals enter the body through the gastrointestinal tract?
What is the term for the process by which chemicals are brought into the body through an open cut?
A person develops asbestosis after repeated exposures to asbestos over 20 years. This is an example of what kind of health effect?
Damage to a person's skin, resulting from exposure to sulfuric acid, is an example of what kind of health effect?
The LC50 applies to materials in the __________ state
What does the T stand for in the acronym TRACEMP?
What does the M stand for in the acronym TRACEMP?
Which type of radiation is emitted as pure electromagnetic energy?
Which statement about radiation is correct?
Ionizing radiation is more dangerous than non-ionizing radiation.
A responder has come in contact with a hazardous material by handling a tool that was used to stop a leak. This is an example of:
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