Brief Summary: The Chemistry Of Fire

Combustion Reaction: A chemical reaction between a fuel and an oxidizing agent that produces heat.

A class B fire is when flammable liquids, such as grease,oils,gasoline,and paints. To put a class B fire you either have to smother it or blanket it. The correct fire extinguisher either has to be carbon dioxide, foam, or dry chemical. The foam fire extinguisher floats on the surface of the fire, cutting off the oxygen and killing the

The most common source of heat for the purpose of firefighting comes from chemical reactions. When something burns, it is the result of a chemical reaction where heat is being released. Pyrolysis is the "decomposition or transformation of a compound caused by heat."(Coleman, et al. 81)

it; it is more analogous to the fuel that fed a tiny flame into the

Smouldering is defined as a self-sustaining exothermic reaction in which the heat released by surface oxidation causes pyrolysis of the unaffected fuel adjacent to the reaction zone, which in turn yields a rigid char which will subsequently undergo surface oxidation citep{smith2006springer}. The initiation of furniture fires by weak heat sources, such as, a cigarette or a short-circuited wire, and the flaming combustion of biomass occurring in bushfires behind the flaming front are two common examples of smouldering combustion citep{rein2009smouldering}.\

Baking Soda - This common ingredient, when heated produces Carbon Dioxide gas. Since the fire would be getting carbon dioxide, the amount of oxygen the fire would be receiving would be limited resulting in the fire being stopped as oxygen is one thing that is required for combustion.

The experimental details and results is as given below Gas fuel-based fire In gas, based fuel flames, the flame extinguishes instantly within 1 seconds. Figure 4.12 below sequence of hi speed images of gas stove flame leading to extinction. The flame size was about 5 cm (W) × 1.5 cm (H). Solid fuel based fire For solid fuel (wood) based fire, the flame doesn’t extinguish quickly, however the flame boundary diminishes gradually over time (approximately three minutes). The Figure below shows sequence of images of solid fire leading to extinction.

When fuels are burnt the majority of the energy released was stored within the weak double bond of molecular oxygen found in the fuel.

3.4.4 Final Flame and Processes The Final Flame as noted before is not included in the energy calculations due to Cohen and Strand [2] affirming that the flame had a negligible energy contribution to the temperature increase of the oxidizer compared to the Monopropellant and Primary Flames. Nevertheless, from a structural standpoint, the Final Flame plays the role of diffusion flame with the products of the Monopropellant Flame reacting with the Primary Flame products. Above the Monopropellant Flame, O2 (a product of the Monopropellant Flame) at 1400 K, reacts with the Primary Flame products as they diffuse into the Monopropellant Flame oxidizer stream. The reactions occur as quickly as fuel diffuses into the Final Flame because the O2, being at the monopropellant flame temperature, is highly reactive.

When the chemicals are heated in the flame, electrons around the nucleus of the metal atoms in these chemicals must be moved to a higher energy state by the heat energy

The functionalist theory is a sociological approach emphasizing how parts of a society are structured to maintain its stability. An example of this is racist beliefs discouraging a minority group from trying to question their lower status in order to maintain stability. Another example of functionalist theory is racial ideologies justifying and encouraging existing practices for social movement. Conflict theory is an approach that assumes that the social structure is understood the most in terms of conflict or tension between minority and majority groups. An example of this is an idea called blaming the victim.

Aphorisms are statements that express the principal of truth. They can talk about many different things. The aphorism that I am going to use is “ give a man a fish and you will feed him for a day; teach a man to fish and you feed him for a lifetime.” (Desmond Tutu) I relate to this saying because I was taught to fish when I first got out of diapers.

Volcano Essay Do you know really good facts about volcanoes if not your at the right place. A quick fact about volcanoes is that they give off very dangerous vog that can give you irritated eyes, coughs, and sore throats. This essay is all about the dangers of volcanoes and what they can do to people. The first way that volcanoes are dangerous is vog.

Much like all events and natural phenomena that pose a threat to civilization, humans have learned to cope with and prevent the loss of human life and destruction of property in devastating blazes that can break out seemingly at random. Fighting fires was not always the science it is today, but due to the use of new technologies and the fundamental understanding of what fire is, how it spreads, how it can kill, and how it is stopped, our protocol when dealing with fires has increased our success rate and continues to grow with applications of engineering, chemistry, and meteorology.

Any ignition source such as an open flame, cigarette or electric spark could potentially ignite this flammable atmosphere to the point of flash fire or explosion.