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2008年全国初中学生化学素质和实验能力竞赛(第十八届天原杯)复赛试题,立意新颖,素材鲜活,是一套体现课改理念、拥有较好区分度的竞赛试题。透过典型的赛题评析,我们可以发现以下亮点。一、联系生产生活,体现学以致用第10题.如图1,将两支燃着的蜡烛罩上茶杯,一会儿后高的蜡烛先熄灭,低的蜡烛后熄灭,同时还观
In 2008, the national junior middle school students’ chemistry diathesis and experimental ability contest (the 18th Tianyuan Cup) semi-finals test questions, with innovative ideas and fresh materials, is a set of contest test questions that embody the idea of curriculum reform and have a good degree of differentiation. Through the analysis of typical topics, we can find the following highlights. First, to link production and life, to reflect the knowledge and use of the first question. As shown in Figure 1, two burning candles are covered with teacups. After a while, the high candles are extinguished first, and the low candles are extinguished.