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在具体的科学实验中,受到实验场地以及仪器等诸多因素的影响和限制,让每个学生都能参与到化学实验中来成了实验探究的重要议题。因此,本文就从我们实际生活当中去寻找实验素材,从而创造一种具有特色氛围的化学实验和实践课程。一、铝的性质实验改进将经砂纸打磨过的几段铝条分别放在四个试管中,然后向试管中分别加入浓硫酸、6mol·L~(-1)盐酸和氢氧化钠溶液以及浓硝酸各3 mL,然后对实验的现象进行仔细观察。
In specific scientific experiments, subject to experimental sites and equipment and many other factors that influence and limit, so that each student can participate in the chemical experiment has become an important topic of experimental exploration. So, this article looks for experimental material from our real life, thus creates a kind of chemistry experimental and practical course with characteristic atmosphere. First, the nature of the aluminum experimental improvements Sandpaper polished several sections of aluminum were placed in four test tubes, and then added to the test tube were concentrated sulfuric acid, 6mol·L -1 hydrochloric acid and sodium hydroxide solution and concentrated Nitric acid each 3 mL, and then observe the phenomenon of the experiment carefully.