论文部分内容阅读
一、实验意图及目标(一)实验意图:1、结合近几年中考中酸、碱、盐的性质及用途的多次考查,学生在性质方面出现困惑并成为实验探究题的答题障碍。2、酸、碱、盐是初中化学的重难点,中考中常以实验探究题的形式来考查,另外本实验也是初中化学中的重要实验。(二)实验目标:知识与技能:1、认识几种常见的酸、碱、盐的主要性质。2、会用p H试纸鉴别溶液的酸碱性。3、会正确书写化学方程式并能完整、准确地描述实验现象。
First, the intent and objectives of the experiment (A) Experimental Intentions: 1, combined with several tests of the nature and use of acid, alkali, salt in the middle school in recent years, students in the nature of confusion and become the answer to the problem of experimental exploration obstacles. 2, acid, alkali, salt is a heavy difficulty in junior high school chemistry, middle school entrance examination often to explore the form of questions to explore, in addition to this experiment is an important experiment in junior high school chemistry. (B) Experimental Objectives: Knowledge and Skills: 1, to recognize the main properties of several common acid, alkali, salt. 2, p H test strips will be used to identify the pH of the solution. 3, will write the correct chemical equations and can complete and accurately describe the experimental phenomenon.