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34 Cards in this Set
- Front
- Back
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Any material used to start or sustain a fire.
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Accelerant
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Any compound consisting of only carbon and hydrogen.
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Hyrdrocarbon
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A chemical or mechanical action caused by combustion and accompanied by the creation of heat and the rapid expansion of gases.
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Explosion
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A substance that supplies oxygen to a chemical reaction.
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Oxidizing agent
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A very rapid oxidation reaction accompanied by the generation of a low-intensity pressure wave that can disrupt the surroundings.
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Deflagration
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An extremely rapid oxidation reaction accompanied by a violent disruptive effect and an intense high-speed shock wave.
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Detonation
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An explosive with a velocity of detonation less than 1,000 meters per second.
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Low explosive
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Normally, a mixture of potassium nitrate, carbon, and sulfur in the ration 75/15/10.
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Black powder
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A cord containing a core of black powder; used to carry a flame to a uniform rate to an explosive charge.
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Safety fuse
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An explosive consisting of nitrocellulose.
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Smokeless powder (single-base)
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An explosive consisting of a mixture of nitrocellulose and nitroglycerin.
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Smokeless powder (double base)
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An explosive with a velocity of detonation greater than 1,000 meters per second.
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High explosive
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A high explosive that is easily detonated by heat, shock or friction.
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Primary explosive
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A high explosive that is relatively insensitive to heat, shock or friction.
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Secondary explosive
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A cordlike explosive containing a core of high-explosive material, usually PETN; aka: primacord.
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Detonating cord
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The rapid combination of oxygen with another substance, accompanied by the production of noticeable heat and light.
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Combustion
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The ability or potential of a system or material to do work.
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Energy
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The entire range of possible gas or vapor fuel concentrations in air that are capable of burning.
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Flammable Range
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The minimum temp. at which a liquid fuel produces enough vapor to burn.
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flash point
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Combustion on the surface of a solid fuel in the absence of heat high enough to pyrolyze the fuel.
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glowing combustion
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The minimum temp. at which fuel spontaneously ignites.
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heat of combustion
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The minimum temp. at which a fuel spontaneously ignites.
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ignition temp.
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An offender's pattern of operation.
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modus oprendi
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The process or result of oxidizing or being oxidized.
The combination of oxygen with other substances to produce new substances. |
oxidation
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Decomposition of solid organic matter by heat.
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pyrolysis
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The ignition of organic matter without apparent cause, typically through heat generated internally by rapid oxidation.
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spontaneous combustion
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Analysis of materials is usually conducted using _ _.
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gas chromatography
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Explosions are caused by combustion followed by the production of _ and _. It is a violent physical disruption that undergoes rapid _ oxidation.
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heat and gases
exothermic |
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The _ _ enables the identification and separation of long chain hydrocarbons (fuel) via the headspace technique. This process cannot determine the brand name of a fuel.
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Gas chromo.
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Analysts must try and locate _, _, and _. Finding the point of origin is very important and may yield the evidence needed to “fuel” the investigation.
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accelerants, ignition devices & fuel containers.
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_ in the form of heat is produced when energy is added to an oxidation reaction.
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Energy
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Not everything that mixes with oxygen creates a fire; most reactions need an _ component- energy.
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additional
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It is the arson investigator’s/analyst’s responsibility to detect and identify relevant _, _and _. This can only be accomplished with training and extensive knowledge of how fires occur and the chemistry of fire.
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chemical materials, reconstruct and identify
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_ investigations are difficult to investigate because the suspects are usually long gone, the evidence has almost completely been destroyed and arsonists usually plan meticulously.
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Arson
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