观察是人类认识世界的一个重要途径和开端,它是一种有目的地通过各种感觉器官主动摄取感知材料的活动。在当今科学技术迅速发展的社会之中,善于观察捕捉信息,敏锐地感受外界事物,是一切工作成功的首要条件。 化学是一门实验性科学,研究化学是以实验现象为基础的。在化学教材里,有近二百个演示实验和40个学生实验。在这些实验教学的过程中,有非常丰富的内容和广泛的途径适 Observing is an important way and beginning for human beings to understand the world. It is an activity that purposefully ingests perceptual materials through various sensory organs. In today’s rapidly developing science and technology society, being good at observing and capturing information and being sensitive to the outside world are the primary conditions for the success of all work. Chemistry is an experimental science and research chemistry is based on experimental phenomena. In chemistry textbooks, there are nearly 200 demonstration experiments and 40 student experiments. In the course of these experimental teaching, there is a very rich content and a wide range of approaches.