在初中化学中,有许多物质或概念“名不符实”,其名称与其俗称、性质、分类、用途等不相吻合,给同学们理解和掌握知识造成了一定的障碍.现对初中化学中部分“似是而非”的物质与概念予以归纳澄清,希望同学们能区分清楚.1.干冰不是冰,而是固体二氧化碳.因为CO2降温加压变为固体后 In junior high school chemistry, there are many kinds of substances or concepts that are “not accurate.” Their names do not coincide with their common names, properties, classifications, uses, etc., which cause certain obstacles for the students to understand and master the knowledge. Now part of junior middle school chemistry. The “paradoxical” substance and concept are clarified and I hope that the students can distinguish clearly. 1. Dry ice is not ice, but solid carbon dioxide. Because the CO2 cools and pressurizes to become solid.