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物质的变化和性质是初中化学的重点和热点概念,贯穿整个初中化学学习的始终,是中考命题中必不可少的一部分。化学实验基本操作是九年级化学的重要基础知识之一,是中考必考的知识点。考点1物质变化类型的判断本考点的考查主要通过设置新情境,联系生产、生活实际和社会上的新闻热点,联系同学们熟悉的自然现象,联系典型的现代科
Material changes and nature of junior high school chemistry is the focus and hot concepts throughout the entire junior high school chemistry learning is always an integral part of the senior high school entrance examination. The basic operation of chemical experiment is one of the important basic knowledge of the ninth grade chemistry, is the knowledge point of the entrance exam. Test points 1 Judgment of the type of material changes The examination of the test center mainly through the establishment of new situations, contact with production, real life and social hot news, contact with the students are familiar with the natural phenomena, contact the typical modern subjects