12 Questions
What is necessary for a substance to oxidize?
Being surrounded by oxygen molecules
What must be reached for a vapor to start burning?
Its ignition temperature
What are the three elements of the fire triangle?
Oxygen, Fuel, Heat
What is the key difference between the fire triangle and the fire tetrahedron?
The tetrahedron requires a fourth element
How are vapor molecules different from solid or liquid molecules?
Vapor molecules are loosely packed
What is a necessary condition for fire to occur?
Sufficient amount of oxygen
What are the three elements required for combustion?
Fuel, oxygen, and heat
Which class of fire involves flammable liquids?
Class C
What is the oxygen percentage needed to support flaming combustion?
3%
Which type of fire involves electrical equipment?
Class FID
What kind of fire involves ordinary combustibles like wood and paper?
Class A
Which class of fire is associated with cooking oil or fat fires?
Class F
This quiz covers the theory of fire, including the start of a fire and the important concept that only vapors can burn. It also discusses the three states of matter and the relationship between molecules and oxygen in the process of oxidation.
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