What evidence would be visible if an ignitable liquid was poured onto a floor and ignited?

When an ignitable liquid is poured onto a floor and ignited, the resulting fire typically creates extensive burn damage to the floor. This is due to the flammable nature of the liquid, which can lead to a rapid and intense fire. The heat generated by the ignition of the liquid would not only consume the liquid itself but also transfer significant heat to the surface of the floor. Depending on the material of the floor (wood, carpet, tile), the damage can vary in severity, but generally, one would expect deep charring or structural damage to occur, indicating that the fire was fed by the ignitable liquid. This extensive burn pattern is a key piece of evidence that investigators would look for when determining the origin and cause of the fire.

In contrast, options such as smoke damage or the odor of burnt chemicals would likely be present in a fire scenario, but they do not directly correlate to the visible evidence of the specific handling of an ignitable liquid on the floor itself. Minimal discoloration might imply a less intense or less damaging fire, which would not accurately represent the situation described when ignitable liquids are involved.