论文部分内容阅读
化学是从分子、原子的层次研究物质的组成、结构、性质以及变化规律的学科。在学习中熟练掌握化学反应的类型,理解不同反应的特征,既有助于初中化学知识网络的构建,又有利于高中化学学习思路的形成。在初中阶段所学的化学反应可以分为哪几种类型呢?常见的分类方法是根据反应物和生成物的种类和数目,将化学反应分为四种基本反应类型,即化合反应、分解反应、置换反应和复分解反应。1.化合反应:由多种物质生成一种物质的化学
Chemistry is a discipline that studies the composition, structure, properties and variation of matter from the molecular and atomic levels. Proficiency in learning types of chemical reactions, to understand the characteristics of different reactions, both to help junior high school chemistry knowledge network construction, but also conducive to the formation of high school chemistry learning ideas. In the junior high school can learn chemical reaction can be divided into several types? Common classification method is based on the type and number of reactants and products, the chemical reaction is divided into four basic types of reactions, namely, chemical reaction, decomposition reaction , Displacement reaction and metathesis reaction. 1.Chemical reaction: the chemical produced by a variety of substances