一、复习要求1了解混合物的分离与提纯的区别和联系.2掌握混合物的分离与提纯的基本方法和原理,能够运用所学知识选择合适的方法对混合物进行分离和提纯.二、知识结构混合物分离和提纯的方法物理方法过滤结晶蒸发溶剂冷却热饱和溶液化学方法化气法沉淀法高温或加热法溶解法置换 First, review the requirements 1 to understand the difference between the separation and purification of the mixture and contact. 2 grasp the basic methods and principles of the separation and purification of the mixture, can use the knowledge to choose the right method to separate and purify the mixture. Second, the knowledge structure mixture Methods for separation and purification Physical methods Filtration Crystallization Evaporation Solvent Cooling Thermally saturated solution Chemical method Gasification method Precipitation method High temperature or heating method Dissolution method