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初中物理热学中,探究不同物质吸热升温现象的实验探究,是近几年中考的热点内容之一,几乎每年都会考到,通常以实验题的形式出现.要准确的解答此类题目,要求学生具备扎实的基础知识,能熟练运用控制变量法和转化法的相关知识,具备较高的思维能力,因此,此类题型较难,解题方法不易掌握,学生在答题时极易出错.例1某同学在做“比较不同物质的吸热能力”的实验时,使用相同的电加热器给水和煤油加热,得到的实验数据见表1.
In junior middle school physics thermodynamics, exploring the phenomenon of endothermic warming of different substances is one of the hottest topics in recent years, and it will be tested almost every year, usually in the form of experimental questions. To answer such questions accurately, Students have a solid foundation of knowledge, proficiency in the use of control variables and transformation of the relevant knowledge, with high thinking ability, therefore, these types of questions is more difficult to solve the problem is not easy to grasp, students are prone to error in the answer. Example 1 Some students did the experiment “Compare the heat absorption ability of different substances”, and used the same electric heater to heat water and kerosene. The experimental data are shown in Table 1.