目前,新教材、新课程标准对教学的要求在不断的提高,特别注重学生的知识与技能,过程与方法,特别注重学生能主动活泼,科学探究。这里就九年级化学反应的顺序问题谈谈自己的看法。化学是九年级刚刚起步的,知识面不广,基础知识还不牢,所以在这些问题上相对棘手。比如,一种物质和某种混合物中的两种或两种以上的物质都发生反应时,哪种物质先反应,哪 At present, new teaching materials, new curriculum standards for teaching requirements are constantly improving, with particular emphasis on students’ knowledge and skills, processes and methods, with particular emphasis on students can take the initiative to lively, scientific inquiry. Here to talk about the sequence of ninth grade chemical reaction to their own views. Chemistry is just the beginning of the ninth grade, the knowledge is not broad, basic knowledge is not strong, so these issues are relatively tricky. For example, a substance and a mixture of two or more substances react, which substances react first, which