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实验体系的特点:这个简单实验是为了帮助我们对金属(主要是常见金属,如钠、镁、铝、铜、铁)的物理性质及化学性质形成初步的认识。由于实验条件所限,涉及的物理性质仅限于能够用肉眼观察、触摸以及简单仪器能够完成的几种,但是可以获得简单识别常见金属的依据。化学性质则限于和空气、水及某些酸碱间的作用。可以根据当地条件选定实验的内容。金属的物理性质可以选择以下内容探究:金属
Experimental system features: This simple experiment is to help us to form a preliminary understanding of the physical properties and chemical properties of metals (mainly common metals such as sodium, magnesium, aluminum, copper and iron). Due to experimental conditions, the physical properties involved are limited to those that can be observed with the naked eye, touch, and simple instruments, but provide a simple basis for identifying common metals. The chemical nature is limited to the role of air, water and some acid and alkali. According to local conditions can be selected experiment content. The physical properties of metals can choose to explore the following: Metal