User:Harris Bolton/sandbox

What is the meaning of chemical reaction. The chemical reaction is the process of transformation of one set of chemical substance to another. Chemical reactions cause a change in the positions of electrons of the substance and breaking of chemical bonds between the atoms of the substances undergoing through the chemical reactions ,but without any change in the nucleus ( i.e no change in the elements present). Any chemical reactions can described by what we called #CHEMICAL EQUATION .We've to notice that there are some reactions occur between unstable and radioactive elements causes both change in electrons and the nucleus of the atoms ,this is what we called #NUCLEAR REACTIONS which changes undergoes in nucleus and electron ,but in normal chemical reactions no change occur in the nucleus. The substance which initially involved in any chemical reactions called #reactants or #reagents. There are some #Chemical change which occur for the reactants or reagents which undergoes chemical reactions leads to produce one or more end #product. The end #product is usually differ in its properties than the initial #reagent. The chemical reactions often consists of sub-steps called #elementary reactions. The steps and the course of the reagents until it will be an end product is called #reaction mechanism. We describe what is occur in the chemical reaction by #Chemical #Equations. The chemical equations represents the starting material #reagents to end #product. The chemical reaction occur between the reagents in an appropriate chemical concentration and in a given temperature ,when the temperature increase the #reaction #rate increase ,the temperature increasing gives a  thermal energy needed to reach the activation energy which cause the breakage of bonds between atoms. There are 2 kinds of chemical reactions 1-forward reactions 2- reverse reaction both reactions when completed reach to what we called chemical equilibrium. The #Spontaneous chemical reaction ,it is a chemical reaction which requiring no input of free energy to reach to chemical equilibrium. The #Non-Spontaneous chemical reactions ,it is a chemical reaction require input of free energy to go forward direction to reach its chemical equilibrium. §Harris Bolton