学习了分子的性质后,同学们知道了物质的分子总是在不停地运动。小天是个爱动脑筋的同学,他提出了一个问题——影响分子运动快慢的因素是什么呢?这个问题引起了大家的兴趣,他们经过一番激烈争论后,决定用实验的方法来探究一下。 After learning about the nature of the molecules, the students learned that the molecules of matter are always moving. Xiaotian is a brainy classmate. He asked a question: What is the factor affecting the speed of the movement of the molecules? This question has caused everyone’s interest. After a fierce debate, they decided to use experimental methods to explore .