The series Chemistry and Physics of Solid Surfaces presents selected review articles predominantly from the area of gas/solid interfaces. These articles are written by internationally recognized experts, the invited speakers of the International Summer Institute in Surface Science (ISISS). Volume VIII covers the following topics: Surface reactivity - activation and desorption of molecules; desorption induced by electronic transitions; intra-adsorbate bond breaking, and the effect of high electric fields; metal clusters and atoms in zeolites; chaos in surface dynamics; surface characterization by STM (theory and application), LEEM, PAX, TOF-SARCH, SEMN with polarization analysis, and by low energy positron diffraction. The purpose of this series is to bring researchers in academia and industry up to date and to bridge the gap between conventional surface science textbooks and specialized conference proceedings. Extensive literature references are provided together with a detailed subject index.