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研究近年来高考理综试题,我们不难发现,立足基础,考查能力是其一个显著特点,体现出对基础知识运用的能力要求提高了。下面,就以几道高考化学实验题为例作以剖析,以期对我们的高考复习有所启示。例1 .( 2 0 0 1年第2 8题) 用图1所示的装置制取氢气,在塑料隔板上放锌粒,漏斗和带
In recent years, it is not difficult for us to find out that, based on the basics, examination ability is a significant feature of the college entrance examination and comprehensive examination questions, which shows that the ability to use basic knowledge has increased. Below, we will use a few college entrance examination chemistry experiments as an example to analyze, with a view to our college entrance examination review. Example 1. (Equation 28 of 2001) Hydrogen gas was produced using the apparatus shown in Fig. 1, and zinc pellets, funnels and belts were placed on plastic separators.