Historical Relation
Chemical Kinetics is the study and discussion of chemical reactions with attention to reaction rates, effect of various variables, etc. There are many topics to be discussed, and each of these topics is a tool for the study of chemical reactions. By the way, the study of motion is called kinetics, from Greek kinesis, meaning movement.
At the macroscopic level, we are interested in amounts reacted, formed, and the rates of their formation. At the molecular or microscopic level, the following considerations must also be made in the discussion of chemical reaction mechanism.
Molecules or atoms of reactants must collide with each other in chemical reactions.
The molecules must have sufficient energy (discussed in terms of activation energy) to initiate the reaction.
In some cases, the orientation of the molecules during the collision must also be considered.
Reaction Rates
Chemical reaction rates are the rates of change in concentrations or amounts of either reactants or products. For changes in amounts, the units can be one of mol/s, g/s, lb/s, kg/day and others. For changes in concentrations, the units can be one of mol/(L s), g/(L s), %/s and others.
With attention to reaction rates, we may deal with average rates, instantaneous rates, or initial rates depending on the experimental conditions.
Thermodynamics and kinetics are two factors that affect reaction rates. The study of energy gained or released in chemical reactions is called thermodynamics, and such energy data are called thermodynamic data. However, thermodynamic data have no direct correlation with reaction rates, for which the kinetic factor is perhaps more important.
Additional research:
Greek Philosophers created the "Four Element Theory" ; fire, water, air and earth. Then later on in the Middle Ages 'scientist' or Alchemist studied chemical transformations, like turning lead into gold. Although it was slowly developing. In the early days, they messed with fire, by creating it, fermentation or reduction of ores. By creating things they made chemical reactions. In the 17th century Johann Rudolph Glauber produced Hydrolic Acid, in which he had to do a chemical reaction in order for it to work correctly.
