ASIS International (ASIS) Professional Certified Investigator Practice Exam

What is one role of an accelerant in combustion processes?

1. To cool the flames

2. To slow down the reaction

3. To increase the intensity of the fire

4. To extinguish the fire

The correct answer is: To increase the intensity of the fire

An accelerant plays a crucial role in combustion processes by increasing the intensity of the fire. It is a substance that promotes or enhances the burning of a material, enabling a faster and more vigorous combustion reaction. Common accelerants include materials such as gasoline, kerosene, and alcohol, which have properties that allow them to ignite easily and sustain a flame. Using an accelerant in combustion not only increases the temperature of the fire but also expands the area affected by the flames, leading to a more intense burn. This can be critical in forensic investigations, as the presence of accelerants can indicate arson or intentional fire-setting. In contrast, the other choices describe functions that are not aligned with the purpose of an accelerant. For example, cooling the flames would inhibit combustion, while slowing down the reaction contradicts the essence of what an accelerant does. The use of accelerants is also contrary to the intent of extinguishing a fire, which aims to stop the combustion process altogether. Thus, increasing the fire's intensity accurately reflects the essential role of an accelerant within combustion processes.