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在标准大气压下,水在温度达到100℃时会沸腾。如果水沸腾后平静下来,我们能在不加热的情况下让它重新沸腾吗?能!材料试管、实验用温度计(测量范围为0℃至100℃)、冰块、塑料袋、塞子、绳子、水。步骤1.往塑料袋里装冰块,然后用绳子扎紧袋口。2.将沸腾的水注入试管,让水约占试管容积的1/4,水很快停止沸腾。3.立刻把温度计倒着放入试管,趁试管口还在冒白雾,用塞子堵住试管口。4.把试管倒过来,用装有冰块的塑料袋包住试管的尾部。
At standard atmospheric pressure, the water boils when the temperature reaches 100 ° C. If the water calms down, can we let it re-boil without heating? Materials Test tubes, experimental thermometers (measuring range 0 ° C to 100 ° C), ice cubes, plastic bags, stoppers, ropes, water. Step 1. Pack the ice cubes in a plastic bag and tie the bag with the rope. 2. The boiling water into the test tube, so that about one-fourth of the volume of the test tube, water quickly stop boiling. 3. Immediately put the thermometer back into the test tube, taking advantage of test tube port still taking the white fog, plug with a plug test tube mouth. 4. Turn the test tube upside down and wrap the end of the test tube in a plastic bag with ice cubes.