e.raddant+reaction+teaching+wiki.

TEACHING CHEMICAL REACTIONS..

Chemical reactions take place everywhere, unacknowledged in daily occurrences or studied closely in laboratories. These chemical reactions vary but each of the thousands of kinds can all be classified into five basic types of reactions; synthesis, decomposition, single displacement, double displacement, and combustion. A //synthesis// reaction is the simplest of the five; it involves two elements or compounds which react to form one new, more complex compound. The opposite of a synthesis reaction is a //decomposition// reaction, which entails a complex compound breaking down (or decomposing) to form two simpler elements or compounds. The following two reaction types are more complicated. A //single displacement// reaction occurs when an element and a compound react and produce a new compound where the element switches places with the ion in the reactant compound. However, a //double displacement// reaction takes place when two compounds react and form two new compounds in which the ions of the reactant compounds switch. Finally, a //combustion// reaction occurs when some element or compound reacts with oxygen and forms water and/or carbon dioxide.

synthesis reactions. decomposition reactions. single displacement reactions. double displacement reactions. combustion reactions.