A subduction zone is also generated when two oceanic plates collide â the older plate is forced under the younger one â and it leads to the formation of chains of volcanic islands known as island arcs. Examples include the Mariana Islands in the western Pacific Ocean and the Aleutian Islands, off the coast of Alaska.
Gabriel Synthesis. Gabriel Synthesis is an organic chemical reaction in which primary alkyl halides are transformed into primary amines using potassium phthalimide. This reaction is named after a German chemist Siegmund Gabriel.Pure primary aliphatic amines are prepared from alkyl halides by this method.abriel Synthesis. Gabriel Synthesis is an organic chemical reaction in which primary alkyl halides are transformed into primary amines using potassium phthalimide. This reaction is named after a German chemist Siegmund Gabriel.
Light reactions turn light energy into chemical energy. Light is absorbed by chlorophyll and causes a transfer of e- and hydrogen from water to NADP+. They temporarily store the electrons. Water is split throughout this process and O2 is made a by-product. Light reactions use solar power to lower NADP+ to NADPH by adding a pair of electrons and H+. The light reactions also make ATP by adding a phosphate group to ADP. This process is photophosphorylation.