一、单元思维导图二、方法归纳总结1.质量守恒定律(1)用列表法确定物质的质量比中考中关于质量守恒定律考查的热点题型是:给出几种物质,充分反应后,用表格列出反应前后各物质的质量,然后要求判断物质在反应前后的质量或参加反应的质量比或在方程式中的化学计量数之比或反应类型等等.解答此类 First, the unit mind map Second, the method summarized Summary 1. The law of conservation of mass (1) to determine the quality of the material than the list of exams on the law of conservation of mass exam questions hot questions are: given several substances, fully reacted, Table lists the quality of each substance before and after the reaction, and then asked to determine the mass of the substance before or after the reaction or to participate in the reaction mass ratio or stoichiometric ratio in the equation or reaction type, etc. To answer such