HAZMAT TECHNICIAN EXAM
QUESTIONS WITH COMPLETE
SOLUTIONS GRADED A+
Physical state - Answer-The classification of matter as a solid, a liquid or a gas
Polymerization - Answer-Any process in which relatively small molecules, called
monomers, combine chemically to produce a very large chainlike or network molecule,
called a polymer.
Radioactivity - Answer-The spontaneous emission of radiation by an unstable atomic
nucleus
alpha particle - Answer-a positively charged particle emitted from certain radioactive
nuclei; it consists of two protons and two neutrons and is identical to the nucleus of a
helium atom.
Beta Particle - Answer-a high-speed electron or positron emitted in the decay of a
radioactive isotope
Gamma Radiation - Answer-electromagnetic radiation emitted during radioactive decay
and having an extremely short wavelength
Reactivity - Answer-a substance's propensity to release energy or undergo change, for
example; self-reaction, polymerization, or violent reaction.
Water reactivity - Answer-Describes the sensitivity of a material to water without the
addition of heat or confinement.
Riot Control Agents - Answer-(sometimes referred to as "tear gas") Chemical
compounds that temporarily make people unable to function by causing irritation to the
eyes, mouth, throat, lungs, and skin.
Saturated Hydrocarbons - Answer-A hydrocarbon that contains only single bonds. They
are also called alkanes or paraffin hydrocarbons.
Ex: Methane, Butane
Unsaturated Hydrocarbons - Answer-Materials that have at least one multiple bond
between two carbon atoms somewhere in the molecule, which causes them to be more
, hazardous. Those with at least one double bond are called alkenes and those with at
least one triple bond are called alkynes
Aromatic Hydrocarbons - Answer-Materials that contain the benzene "ring" which is
formed by six carbon atoms and contains double bonds. Its greatest hazard is toxicity.
Self-accelerating decomposition temperature - Answer-When this temperature is
reached by some portion of the mass of the organic peroxide irreversible decomposition
will begin. This reaction can be violent, usually rupturing the vessel or container
dispersing peroxide, liquid and gaseous decomposition products considerable
distances.
Solubility - Answer-the ability of one substance to dissolve in another at a given
temperature and pressure.
Solution - Answer-A mixture that is formed when a solute is dissolved into a solvent.
Slurry - Answer-Pourable mixture of a solid and a liquid.
Specific Gravity - Answer-The weight of a solid or liquid compared to an equal volume
of water.
Strength - Answer-The concentration of a solution. In corrosives, strength refers to the
degree of ionization of an acid or base in water.
Sublimation - Answer-A change directly from the solid to the gaseous state without
becoming liquid
Temperature of product - Answer-Influences the hazards present and the measures
taken to control an incident that involves that product.
Toxic products of combustion - Answer-Byproducts of the combustion process that are
harmful to humans. Some materials generate more highly toxic gases than others do;
therefore, appropriate levels of protective clothing and equipment must be used to
counter them.
Vapor Density - Answer-weight of a vapor compared to air
Vapor Pressure - Answer-the pressure exerted by a vapor over a liquid
Vesicants (blister agents) - Answer-These agents are extremely toxic, with the
symptoms of exposure not appearing for minutes, hours, or days.
-Phosgene
-Mustard
-Lewisite
QUESTIONS WITH COMPLETE
SOLUTIONS GRADED A+
Physical state - Answer-The classification of matter as a solid, a liquid or a gas
Polymerization - Answer-Any process in which relatively small molecules, called
monomers, combine chemically to produce a very large chainlike or network molecule,
called a polymer.
Radioactivity - Answer-The spontaneous emission of radiation by an unstable atomic
nucleus
alpha particle - Answer-a positively charged particle emitted from certain radioactive
nuclei; it consists of two protons and two neutrons and is identical to the nucleus of a
helium atom.
Beta Particle - Answer-a high-speed electron or positron emitted in the decay of a
radioactive isotope
Gamma Radiation - Answer-electromagnetic radiation emitted during radioactive decay
and having an extremely short wavelength
Reactivity - Answer-a substance's propensity to release energy or undergo change, for
example; self-reaction, polymerization, or violent reaction.
Water reactivity - Answer-Describes the sensitivity of a material to water without the
addition of heat or confinement.
Riot Control Agents - Answer-(sometimes referred to as "tear gas") Chemical
compounds that temporarily make people unable to function by causing irritation to the
eyes, mouth, throat, lungs, and skin.
Saturated Hydrocarbons - Answer-A hydrocarbon that contains only single bonds. They
are also called alkanes or paraffin hydrocarbons.
Ex: Methane, Butane
Unsaturated Hydrocarbons - Answer-Materials that have at least one multiple bond
between two carbon atoms somewhere in the molecule, which causes them to be more
, hazardous. Those with at least one double bond are called alkenes and those with at
least one triple bond are called alkynes
Aromatic Hydrocarbons - Answer-Materials that contain the benzene "ring" which is
formed by six carbon atoms and contains double bonds. Its greatest hazard is toxicity.
Self-accelerating decomposition temperature - Answer-When this temperature is
reached by some portion of the mass of the organic peroxide irreversible decomposition
will begin. This reaction can be violent, usually rupturing the vessel or container
dispersing peroxide, liquid and gaseous decomposition products considerable
distances.
Solubility - Answer-the ability of one substance to dissolve in another at a given
temperature and pressure.
Solution - Answer-A mixture that is formed when a solute is dissolved into a solvent.
Slurry - Answer-Pourable mixture of a solid and a liquid.
Specific Gravity - Answer-The weight of a solid or liquid compared to an equal volume
of water.
Strength - Answer-The concentration of a solution. In corrosives, strength refers to the
degree of ionization of an acid or base in water.
Sublimation - Answer-A change directly from the solid to the gaseous state without
becoming liquid
Temperature of product - Answer-Influences the hazards present and the measures
taken to control an incident that involves that product.
Toxic products of combustion - Answer-Byproducts of the combustion process that are
harmful to humans. Some materials generate more highly toxic gases than others do;
therefore, appropriate levels of protective clothing and equipment must be used to
counter them.
Vapor Density - Answer-weight of a vapor compared to air
Vapor Pressure - Answer-the pressure exerted by a vapor over a liquid
Vesicants (blister agents) - Answer-These agents are extremely toxic, with the
symptoms of exposure not appearing for minutes, hours, or days.
-Phosgene
-Mustard
-Lewisite
