What is a chemical reaction mechanism?

Question

reaction of elements
joining of some elements and produce new mixture

Answer 1

Lancenigo di Villorba (TV), Italy

I try to explicate you waht is chemical reaction's mechanisms.
This mechamism is an articulate ensemble of balanced chemical equations which involved chemical species of an abserved chemical process, but not only these species.
As you know, interpretations of chemical peculiarities lead chemists (middle of XIX century) to "radical's idea", that is existence of other compounds who are intermediate between reactants and products. Nowadays, term "radical" indicate a poli-atomic aggregate which have not an electrical charge but it shows valence electron unpaired (difference to molecules).
So, among the intermediate you can enumerate radical, ions, or molecule very reactives.
Usually, a chemical mechanism involves several intermediates and it should shows how reactants follows several steps (mechanism's equations) to overcoming to products.
You would think that this guide-lines lead to several mechamism for an assigned reaction. Obviously, this is permissible not because scientific describing should be one and only one.
In the practice, scientists operate many and many experimental and technical tests which produced data and reports.
Among the mechanism proposed, scientists choose an only one mechanism so they can respect all your remarks. This is an important application of "galileian or experimental method".

I hope this helps you.

Answer 2

Let me make it as simple as I can:

Say you have a chemical equation, ANY chemical equation: for example

Ca + S --> CaS

the "mechanism" is what takes place where the arrow is. It includes all the intermediate steps taken (if any) between the time the reactants get together and the products are produced. They generally do not write down the specific mechanism for reactions, except when necessary. That's usually only necessary at rather high levels of chemistry coursework.

This is all you need to know.

Answer 3

the somewhat some steps interior the mechanism will ensue at diverse expenses. oftentimes between the stairs is a lot slower than the others that it limits the final cost. (that's noted as the fee-proscribing or cost controlling step.) Any reactants that don't influence the final cost a lot participate purely in steps after the fee-proscribing step. an somewhat thorough yet somewhat comprehensible communicate is in Morrison and Boyd's organic and organic Chemistry text textile. they think approximately the mechanism for the reaction of methane and chlorine, showing how all styles of experimental consequences would be used to explain a mechanism.

Answer 4

Your question is rather vague, but this might help.

Reactions can be thought of as belonging to one of the following classifications: single-replacement, double-replacement, synthesis, acid-base, combustion

single-replacement can be described simply by: A + BC -> AC + B
Double-replacement: AB + CD -> AD + CB
Synthesis: A + B -> AB
Acid-base: Acid + base -> salt + water (water as a product is key)
Combustion: Hydrocarbon + O2 -> CO2 + H2O

Hope this helps.