IS-0005.aIntro to Hazardous Materials questions and answers
2026\2027 A+ Grade
Absorption
- correct answer Entry of toxicants through the skin. Passing of a substance into the circulatory system.
ACGIH
- correct answer American Conference of Governmental Industrial Hygienist
Acute Expose
- correct answer Short term exposure of a toxic substance.
Acute Toxicity
- correct answer Poisonous effects from a short-term exposure. The LD50 of a substance (deadly does
that 50% of test animals fall to toxicity) is the measure of this.
Additive Effect
- correct answer Biological response to multiple chemicals exposure that are equal to the all the effects
of the agents on their own.
Adsorption
- correct answer Chemical bonding to soil particles/other surfaces.
Aerosol
- correct answer A solid particle/liquid droplet suspended in air. These are larger than a molecule that
can be filtered form the air.
Antagonism
- correct answer Two chemicals interfering with each other's actions or when one interferes with the
action of another.
, Aquifer
- correct answer Underground bed/layer of earth, gravel, or porous storage containing water.
Asphyxiants
- correct answer Chemicals starving the cells of an individual from life-giving oxygen needed to upkeep
metabolism.
Biodegradable
- correct answer Quickly decomposable by the actions of microorganisms.
Biomagnification
- correct answer Tendency of certain chemicals to get concentrated as they move into and up the food
chain.
Boiling Point
- correct answer Temp where a liquid becomes a gas and boils. Chemicals with low boiling points can
boil and evaporate quickly if a material is flammable also has a low boiling point a special fire hazard
exists.
Carcinogen
- correct answer Chemical/physical agent that encourages cells to develop cancer.
Central Nervous System Depressants
- correct answer Toxicants that slow the central nervous system therefore, eradicating senses.
CERCLA
- correct answer Comprehensive Environmental Response, Compensation, and Liberty Act of 1980 that
Federally auth. "Superfund" by the EPA providing clean up and emergency response actions funding for
hazardous substances at chaotic hazardous waste sites in the U.S. It also set the first mandate for
notification of emergencies involving hazardous substances such as regulating abandoned waste
disposal site.
2026\2027 A+ Grade
Absorption
- correct answer Entry of toxicants through the skin. Passing of a substance into the circulatory system.
ACGIH
- correct answer American Conference of Governmental Industrial Hygienist
Acute Expose
- correct answer Short term exposure of a toxic substance.
Acute Toxicity
- correct answer Poisonous effects from a short-term exposure. The LD50 of a substance (deadly does
that 50% of test animals fall to toxicity) is the measure of this.
Additive Effect
- correct answer Biological response to multiple chemicals exposure that are equal to the all the effects
of the agents on their own.
Adsorption
- correct answer Chemical bonding to soil particles/other surfaces.
Aerosol
- correct answer A solid particle/liquid droplet suspended in air. These are larger than a molecule that
can be filtered form the air.
Antagonism
- correct answer Two chemicals interfering with each other's actions or when one interferes with the
action of another.
, Aquifer
- correct answer Underground bed/layer of earth, gravel, or porous storage containing water.
Asphyxiants
- correct answer Chemicals starving the cells of an individual from life-giving oxygen needed to upkeep
metabolism.
Biodegradable
- correct answer Quickly decomposable by the actions of microorganisms.
Biomagnification
- correct answer Tendency of certain chemicals to get concentrated as they move into and up the food
chain.
Boiling Point
- correct answer Temp where a liquid becomes a gas and boils. Chemicals with low boiling points can
boil and evaporate quickly if a material is flammable also has a low boiling point a special fire hazard
exists.
Carcinogen
- correct answer Chemical/physical agent that encourages cells to develop cancer.
Central Nervous System Depressants
- correct answer Toxicants that slow the central nervous system therefore, eradicating senses.
CERCLA
- correct answer Comprehensive Environmental Response, Compensation, and Liberty Act of 1980 that
Federally auth. "Superfund" by the EPA providing clean up and emergency response actions funding for
hazardous substances at chaotic hazardous waste sites in the U.S. It also set the first mandate for
notification of emergencies involving hazardous substances such as regulating abandoned waste
disposal site.
