HAZARDOUS MATERIALS MASTER STUDY
NOTES 2026 HIGH SCORE PRACTICE
SOLVED
● List the types of materials included in the definition of hazmat.
Answer: Hazardous substances, hazardous wastes, marine pollutants,
elevated temperature materials, and materials designated as hazardous in
the Hazardous Materials Table (49 CFR 172.101).
● What are the characteristics of hazardous materials? Answer:
Flammability, explosiveness, toxicity, poison, reactivity, radioactivity,
and corrosiveness.
● What are the effects of hazardous materials? Answer: Thermal,
mechanical, chemical, radiological, and etiological.
● How many hazard classes are there for hazardous materials? Answer:
There are 9 hazard classes based on the dangers posed in transportation
(49 CFR 171.8).
● What is Class 1 in the hazard classes? Answer: Explosive materials,
including substances designed to function by explosion.
, ● What is Division 1.1 in Class 1 explosives? Answer: Explosives that
have a mass explosion hazard affecting almost the entire load
instantaneously.
● What is Class 2 in the hazard classes? Answer: Gases.
● What is Class 3 in the hazard classes? Answer: Flammable liquids.
● What is Class 4 in the hazard classes? Answer: Flammable solids.
● What is Class 5 in the hazard classes? Answer: Oxidizing substances
and organic peroxides.
● What is Class 6 in the hazard classes? Answer: Toxic substances and
infectious substances.
● What is Class 7 in the hazard classes? Answer: Radioactive materials.
● What is Class 8 in the hazard classes? Answer: Corrosive materials.
● What is Class 9 in the hazard classes? Answer: Miscellaneous
hazardous materials and dangerous goods.
NOTES 2026 HIGH SCORE PRACTICE
SOLVED
● List the types of materials included in the definition of hazmat.
Answer: Hazardous substances, hazardous wastes, marine pollutants,
elevated temperature materials, and materials designated as hazardous in
the Hazardous Materials Table (49 CFR 172.101).
● What are the characteristics of hazardous materials? Answer:
Flammability, explosiveness, toxicity, poison, reactivity, radioactivity,
and corrosiveness.
● What are the effects of hazardous materials? Answer: Thermal,
mechanical, chemical, radiological, and etiological.
● How many hazard classes are there for hazardous materials? Answer:
There are 9 hazard classes based on the dangers posed in transportation
(49 CFR 171.8).
● What is Class 1 in the hazard classes? Answer: Explosive materials,
including substances designed to function by explosion.
, ● What is Division 1.1 in Class 1 explosives? Answer: Explosives that
have a mass explosion hazard affecting almost the entire load
instantaneously.
● What is Class 2 in the hazard classes? Answer: Gases.
● What is Class 3 in the hazard classes? Answer: Flammable liquids.
● What is Class 4 in the hazard classes? Answer: Flammable solids.
● What is Class 5 in the hazard classes? Answer: Oxidizing substances
and organic peroxides.
● What is Class 6 in the hazard classes? Answer: Toxic substances and
infectious substances.
● What is Class 7 in the hazard classes? Answer: Radioactive materials.
● What is Class 8 in the hazard classes? Answer: Corrosive materials.
● What is Class 9 in the hazard classes? Answer: Miscellaneous
hazardous materials and dangerous goods.
