Physical/thermal activation process considerations

The dissociation of molecules is one of the basic processes in chemistry the study of the kinetics of these reactions is therefore of considerable theoretical and practical interest, A simple method of obtaining information about dissociation reactions is to heat the gas to a sufficiently high temperature and then look for thermal decomposition. However for rich mixtures bimolecular reactions may well contribute to the reaction their influence must be separated out so that the unimolecular dissociation can be isolated. The rate of the primary dissociation is determined by elementary physical processes including both energy transfer between particles and internal energy flow. Dissociation reactions, isomerisation processes, photolytic reactions, dissociation of ions (e.g. in a mass spectrometer) and chemical activation experiments are closely related processes. 

Products that are chemically active, such as ground phosphates, or thermally sensitive, such as plastic granules and powder, can also form strong particle-binding forces. For each product under consideration the uniformity, consistency, and stability of composition, throughout its total plant life of process and ambient variation, must be related to the prospect of any physical feature of the material that is able to influence the strength of the particulate mass. 

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