Plasma Chemistry is a collection of papers dealing with chemi-ionization kinetics, elementary chemical processes, kinetics in a non-equilibrium orquasi-equilibrium plasma, and heterogeneous reactions in plasmas of moderate pressure. Several papers discuss spectrometric plasma diagnostics, organic syntheses under plasma conditions, and the survival of plasma chemistry. One paper reviews chemi-ionization reactions, including reactions involving an electronically excited collision partner in which Penning ionization comparisons can be made. The paper also shows that observations made on noble gas metastables do not in apply to reactions of other species. Another paper analyzes the mechanism of plasma chemical reactions occurring under electron impact and through electronic-vibrational excited states. In these states, mutual influence of vibrational relaxation and dissociation becomes significant under low temperature plasma conditions. One paper discusses plasma techniques that have been applied to carry out various types of isomerizations or eliminations with high yields. The paper also shows the possibility of generating reactive species (atoms, radicals, carbenes) by these methods. The collection can prove useful for researchers, technicians, or scientists whose works involve organic chemistry, analytical chemistry, and other related fields of chemistry, such as physical chemistry and inorganic chemistry.