初中热学涉及的内容多而杂.下面我们将这部分知识整理一下,帮助同学们掌握规律,抓住重点,从而提高复习效率.一、一个热量计算公式一个物体放出或吸收的热量可用公式表示如下:Q=cm驻t.热量的单位是焦耳(J).使用热量的计算公式时,需要注意的是:当物体吸收热量时,驻t=t末-t初;当物 The contents involved in junior high school are many and mixed. Here we will sort out this part of the knowledge to help students master the law, seize the key, and thus improve the review efficiency. A. A heat calculation formula The heat released or absorbed by an object can be expressed by the following formula: : Q = cm resident in t. The unit of heat is joules (J). When using the heat calculation formula, it should be noted that: When the object absorbs heat, stay at the end of t=t-t;