What is the chain reaction?

What is the chain reaction?

A chain reaction refers to a process in which neutrons released in fission produce an additional fission in at least one further nucleus. This nucleus in turn produces neutrons, and the process repeats. The process may be controlled (nuclear power) or uncontrolled (nuclear weapons).

What is a chain reaction simple definition?

Definition of chain reaction 1a : a series of events so related to each other that each one initiates the next. b : a number of events triggered by the same initial event. 2 : a self-sustaining chemical or nuclear reaction yielding energy or products that cause further reactions of the same kind.

What is chain reaction give an example?

chain reaction, self-sustaining reaction that, once started, continues without further outside influence. A line of dominoes falling after the first one has been pushed is an example of a mechanical chain reaction; a pile of wood burning after it has been kindled is an example of a chemical chain reaction.

What is chain reaction in organic chemistry?

Chain reaction: A reaction whose mechanism includes one or more steps that are repeated indefinitely, until the chain is terminated, or reactants are used up.

What is the chain reaction in fire?

As heat is added, the ignition source, fuel molecules, and oxygen molecules gain energy and become active. This molecular energy is transferred to other fuel and oxygen molecules which creates a chain reaction where the fuel loses electrons and the oxygen gains electrons.

What is chain reaction machine?

This chain reaction machine is made up of everyday objects and is designed to accomplish a simple task in a silly and complicated way. The motion of this machine is created by a sequence of events, using gravity and simple mechanisms like levers and pulleys to help it along.

What is meant by chain reaction in TQM?

Deming explained. The chain reaction lets you reward workers as the company prospers, instead of seeking to prosper on the backs of workers. Flipping the means and the ends does not work. Reducing costs as the result of process improvement is effective management.

Is combustion a chain reaction?

Combustion is a chain reaction chemically similar to photosynthesis in reverse. Combustion occurs and the match flames. Heat is necessary to begin the combustion process. Once started, fire produces its own heat.

What 3 elements make the chain reaction that starts a fire?

Oxygen, heat, and fuel are frequently referred to as the “fire triangle.” Add in the fourth element, the chemical reaction, and you actually have a fire “tetrahedron.” The important thing to remember is: take any of these four things away, and you will not have a fire or the fire will be extinguished.

Which answer describes what happens during a chain reaction?

A chain reaction refers to a process in which neutrons released in fission produce an additional fission in at least one further nucleus. This nucleus in turn produces neutrons, and the process repeats. The process may be controlled (nuclear power) or uncontrolled (nuclear weapons). U 235 + n → fission + 2 or 3 n + 200 MeV .

What happens during a chain reaction?

chain reaction. n. 1. (General Physics) a process in which a neutron colliding with an atomic nucleus causes fission and the ejection of one or more other neutrons, which induce other nuclei to split.

What is an example of a chain reaction?

Chain reaction, in chemistry and physics, process yielding products that initiate further processes of the same kind, a self-sustaining sequence. Examples from chemistry are burning a fuel gas, the development of rancidity in fats, “knock” in internal-combustion engines, and the polymerization of ethylene to polyethylene. The best-known examples in physics are nuclear fissions brought about by neutrons.

What happens if a chain reaction goes uncontrolled?

During an uncontrolled nuclear chain reaction, a radioactive substance gives off energy at a rate that increases rapidly with time, leading to large amounts of radiation and possibly an explosion .