State Key Laboratory for Physical Chemistry of Solid Surfaces 厦门大学固体表面物理化学国家重点实验室 Chemistry English State Key Laboratory for Physical Chemistry of Solid Surfaces 厦门大学固体表面物理化学国家重点实验室 Lecture 8State Key Laboratory for Physical Chemistry of Solid Surfaces 厦门大学固体表面物理化学国家重点实验室 12.1 Introduction So far most of the compounds we have studied have been open-chain compounds. We also discussed a few ring compounds, the cycloalkanes and cycloalkenes, and found their properties to be very much like their cou