初中物理课本第一册第223页演示水在低压下沸腾的实验里,是否水只达到沸点而没有吸热?如果水沸腾时吸热,它吸收的热量是从哪里来的?为了回答上述问题,让我们举例说明.在一个标准大气压的房间里水的沸点是100℃.往瓶里装入低于100℃的水,例如96℃的水.用抽气机抽出瓶里的气体,使瓶内水面上方的气 In the first volume of the physics textbook for junior high school, page 223, which shows the experiment of boiling water under low pressure, does the water only reach the boiling point and does not absorb heat? If the water absorbs heat when it boils, where does it absorb the heat? To answer these questions Let us give an example. In a standard atmospheric pressure room, the boiling point of water is 100°C. Fill the bottle with water below 100°C, for example, 96°C water. Use a suction machine to extract the gas from the bottle so that the bottle Gas above the water surface