Podcast
Questions and Answers
What is the main purpose of oxygen in the fire triangle theory?
What is the main purpose of oxygen in the fire triangle theory?
- To provide light during combustion
- To serve as the body of the fire
- To aid in combustion (correct)
- To act as the soul of the fire
What is the composition of the atmosphere in terms of oxygen content?
What is the composition of the atmosphere in terms of oxygen content?
- 21% oxygen, 78% nitrogen, 1% impurities (correct)
- 30% oxygen, 50% nitrogen, 20% impurities
- 78% oxygen, 21% nitrogen, 1% impurities
- 40% oxygen, 40% nitrogen, 20% impurities
What is the 'soul' of the fire according to the text?
What is the 'soul' of the fire according to the text?
- Oxygen
- Fuel (correct)
- The chemical chain reaction
- Heat
What is the term used for matter produced by fire and composed of burning incandescent gases?
What is the term used for matter produced by fire and composed of burning incandescent gases?
Which theory includes a chemical chain reaction as one of its elements?
Which theory includes a chemical chain reaction as one of its elements?
In which state are molecules free to move in the fuel source according to the text?
In which state are molecules free to move in the fuel source according to the text?
What is the minimum temperature required for a liquid to release vapors that support combustion?
What is the minimum temperature required for a liquid to release vapors that support combustion?
Which property refers to the constant temperature at which the vapor pressure of a liquid equals the atmospheric pressure?
Which property refers to the constant temperature at which the vapor pressure of a liquid equals the atmospheric pressure?
Which chemical reaction releases energy and produces substances with less energy than the reactants?
Which chemical reaction releases energy and produces substances with less energy than the reactants?
What is the minimum temperature required for a substance to initiate self-contained combustion without external heat sources added?
What is the minimum temperature required for a substance to initiate self-contained combustion without external heat sources added?
In which process does thermal decomposition of combustible matter occur through the action of light?
In which process does thermal decomposition of combustible matter occur through the action of light?
What is the chemical reaction where something comes into contact with oxygen or an oxidizing agent?
What is the chemical reaction where something comes into contact with oxygen or an oxidizing agent?
Study Notes
Fire Triangle Theory
- Oxygen is one of the essential elements in the fire triangle theory, supporting combustion.
Atmosphere Composition
- The atmosphere is composed of approximately 21% oxygen.
Fire Terminology
- The 'soul' of the fire refers to the fuel source.
Products of Combustion
- Embers are the matter produced by fire, composed of burning incandescent gases.
Chemical Chain Reaction
- The chemical chain reaction is one of the elements in the fire triangle theory.
Fuel Source
- In the fuel source, molecules are free to move in the gaseous state.
Vaporization
- The minimum temperature required for a liquid to release vapors that support combustion is its boiling point.
Boiling Point
- Boiling point is the property where the vapor pressure of a liquid equals the atmospheric pressure.
Exothermic Reaction
- Combustion is an exothermic reaction, releasing energy and producing substances with less energy than the reactants.
Autoignition Temperature
- The minimum temperature required for a substance to initiate self-contained combustion without external heat sources is its autoignition temperature.
Photodecomposition
- Photodecomposition is the process where thermal decomposition of combustible matter occurs through the action of light.
Oxidation
- Oxidation is the chemical reaction where a substance comes into contact with oxygen or an oxidizing agent.
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Description
This quiz covers the concepts related to fire, including combustion, rapid oxidation, flame, and other aspects of fire protection and arson investigation.
