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3 days ago · Firefighter I Chapter 4. Get a hint. When a substance changes from one type of matter into another, such as two or more substances combining to form compounds, the substance undergoes a: a. dissolution. b. metamorphosis.
6 days ago · a fire stream is a stream of water or other extinguishing agent after it leaves a fire hose nozzle until it reaches the desired target.
3 days ago · Study with Quizlet and memorize flashcards containing terms like Adding a fourth component, a chemical chain reaction, to the fire triangle creates which of the following models?, At what temperature does fuel continue combustion without any external input of heat, becoming self-sustaining?, Cooking materials such as cooking oils, fats, and ...
The number of molecules arriving at an area on one side of the gas layer, with speed at angle from the normal, in time interval is. These molecules made their last collision at a distance above and below the gas layer, and each will contribute a molecular kinetic energy of where is the specific heat capacity.
2 days ago · The substance (or substances) initially involved in a chemical reaction are called reactants or reagents. Chemical reactions are usually characterized by a chemical change, and they yield one or more products, which usually have properties different from the reactants.
3 days ago · He had produced oxygen gas by heating mercuric oxide (HgO) and various nitrates in 1771–72. [17] [18] [9] Scheele called the gas "fire air" because it was then the only known agent to support combustion. He wrote an account of this discovery in a manuscript titled Treatise on Air and Fire, which he sent to his publisher in 1775. That document ...
3 days ago · Flame tests are performed by first dipping a nichrome wire in a solution of concentrated hydrochloric acid. Nichrome is an alloy of nickel and chromium that does not react with hydrochloric acid.
